Home / 14,158.28-19,538.98-9,691.40

Finding the Fourth Proportional to 14,158.28, 19,538.98 and 9,691.40

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Solution

The fourth proportional to 14,158.28, 19,538.98 and 9,691.40 is: 13,374.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,158.28 : 19,538.98 = 9,691.40 : x
  2. Step 2: Convert to fraction form
    14,158.28/19,538.98 = 9,691.40/x
  3. Step 3: Cross multiply
    14,158.28x = 19,538.98 × 9,691.40
  4. Step 4: Simplify right side
    14,158.28x = 189,360,070.77
  5. Step 5: Solve for x
    x = 189,360,070.77/14,158.28
  6. Step 6: Final answer
    x = 13,374.51

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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.