Home / 38,990.98-53,807.48-21,995.16

Finding the Fourth Proportional to 38,990.98, 53,807.48 and 21,995.16

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Solution

The fourth proportional to 38,990.98, 53,807.48 and 21,995.16 is: 30,353.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,990.98 : 53,807.48 = 21,995.16 : x
  2. Step 2: Convert to fraction form
    38,990.98/53,807.48 = 21,995.16/x
  3. Step 3: Cross multiply
    38,990.98x = 53,807.48 × 21,995.16
  4. Step 4: Simplify right side
    38,990.98x = 1,183,504,131.80
  5. Step 5: Solve for x
    x = 1,183,504,131.80/38,990.98
  6. Step 6: Final answer
    x = 30,353.28

Related Problems

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Half scale
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Double scale
Find fourth proportional to 38,991.98, 53,808.86 and 21,996.16
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.