Home / 38,720.25-53,432.91-21,723.08

Finding the Fourth Proportional to 38,720.25, 53,432.91 and 21,723.08

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Solution

The fourth proportional to 38,720.25, 53,432.91 and 21,723.08 is: 29,977.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,720.25 : 53,432.91 = 21,723.08 : x
  2. Step 2: Convert to fraction form
    38,720.25/53,432.91 = 21,723.08/x
  3. Step 3: Cross multiply
    38,720.25x = 53,432.91 × 21,723.08
  4. Step 4: Simplify right side
    38,720.25x = 1,160,727,111.40
  5. Step 5: Solve for x
    x = 1,160,727,111.40/38,720.25
  6. Step 6: Final answer
    x = 29,977.26

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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.