Home / 38,713.48-53,428.65-21,722.31

Finding the Fourth Proportional to 38,713.48, 53,428.65 and 21,722.31

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Solution

The fourth proportional to 38,713.48, 53,428.65 and 21,722.31 is: 29,979.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,713.48 : 53,428.65 = 21,722.31 : x
  2. Step 2: Convert to fraction form
    38,713.48/53,428.65 = 21,722.31/x
  3. Step 3: Cross multiply
    38,713.48x = 53,428.65 × 21,722.31
  4. Step 4: Simplify right side
    38,713.48x = 1,160,593,698.18
  5. Step 5: Solve for x
    x = 1,160,593,698.18/38,713.48
  6. Step 6: Final answer
    x = 29,979.06

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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.