Home / 27,781.90-38,337.51-15,204.22

Finding the Fourth Proportional to 27,781.90, 38,337.51 and 15,204.22

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Solution

The fourth proportional to 27,781.90, 38,337.51 and 15,204.22 is: 20,981.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,781.90 : 38,337.51 = 15,204.22 : x
  2. Step 2: Convert to fraction form
    27,781.90/38,337.51 = 15,204.22/x
  3. Step 3: Cross multiply
    27,781.90x = 38,337.51 × 15,204.22
  4. Step 4: Simplify right side
    27,781.90x = 582,891,936.29
  5. Step 5: Solve for x
    x = 582,891,936.29/27,781.90
  6. Step 6: Final answer
    x = 20,981.00

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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.