Home / 20,614.40-28,468.08-14,257.28

Finding the Fourth Proportional to 20,614.40, 28,468.08 and 14,257.28

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Solution

The fourth proportional to 20,614.40, 28,468.08 and 14,257.28 is: 19,689.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,614.40 : 28,468.08 = 14,257.28 : x
  2. Step 2: Convert to fraction form
    20,614.40/28,468.08 = 14,257.28/x
  3. Step 3: Cross multiply
    20,614.40x = 28,468.08 × 14,257.28
  4. Step 4: Simplify right side
    20,614.40x = 405,877,387.62
  5. Step 5: Solve for x
    x = 405,877,387.62/20,614.40
  6. Step 6: Final answer
    x = 19,689.02

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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.