Home / 27,142.71-40,681.23-13,987.90

Finding the Fourth Proportional to 27,142.71, 40,681.23 and 13,987.90

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Solution

The fourth proportional to 27,142.71, 40,681.23 and 13,987.90 is: 20,964.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,142.71 : 40,681.23 = 13,987.90 : x
  2. Step 2: Convert to fraction form
    27,142.71/40,681.23 = 13,987.90/x
  3. Step 3: Cross multiply
    27,142.71x = 40,681.23 × 13,987.90
  4. Step 4: Simplify right side
    27,142.71x = 569,044,977.12
  5. Step 5: Solve for x
    x = 569,044,977.12/27,142.71
  6. Step 6: Final answer
    x = 20,964.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.