Home / 38,988.23-53,802.55-21,992.23

Finding the Fourth Proportional to 38,988.23, 53,802.55 and 21,992.23

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Solution

The fourth proportional to 38,988.23, 53,802.55 and 21,992.23 is: 30,348.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,988.23 : 53,802.55 = 21,992.23 : x
  2. Step 2: Convert to fraction form
    38,988.23/53,802.55 = 21,992.23/x
  3. Step 3: Cross multiply
    38,988.23x = 53,802.55 × 21,992.23
  4. Step 4: Simplify right side
    38,988.23x = 1,183,238,054.19
  5. Step 5: Solve for x
    x = 1,183,238,054.19/38,988.23
  6. Step 6: Final answer
    x = 30,348.60

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Half scale
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Double scale
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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.