Home / 38,994.81-53,812.68-21,999.05

Finding the Fourth Proportional to 38,994.81, 53,812.68 and 21,999.05

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Solution

The fourth proportional to 38,994.81, 53,812.68 and 21,999.05 is: 30,358.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,994.81 : 53,812.68 = 21,999.05 : x
  2. Step 2: Convert to fraction form
    38,994.81/53,812.68 = 21,999.05/x
  3. Step 3: Cross multiply
    38,994.81x = 53,812.68 × 21,999.05
  4. Step 4: Simplify right side
    38,994.81x = 1,183,827,870.48
  5. Step 5: Solve for x
    x = 1,183,827,870.48/38,994.81
  6. Step 6: Final answer
    x = 30,358.60

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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.