Home / 27,776.97-38,337.20-15,681.13

Finding the Fourth Proportional to 27,776.97, 38,337.20 and 15,681.13

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Solution

The fourth proportional to 27,776.97, 38,337.20 and 15,681.13 is: 21,642.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,776.97 : 38,337.20 = 15,681.13 : x
  2. Step 2: Convert to fraction form
    27,776.97/38,337.20 = 15,681.13/x
  3. Step 3: Cross multiply
    27,776.97x = 38,337.20 × 15,681.13
  4. Step 4: Simplify right side
    27,776.97x = 601,170,617.04
  5. Step 5: Solve for x
    x = 601,170,617.04/27,776.97
  6. Step 6: Final answer
    x = 21,642.77

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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.