Home / 19,655.53-27,129.17-11,702.30

Finding the Fourth Proportional to 19,655.53, 27,129.17 and 11,702.30

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Solution

The fourth proportional to 19,655.53, 27,129.17 and 11,702.30 is: 16,151.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,655.53 : 27,129.17 = 11,702.30 : x
  2. Step 2: Convert to fraction form
    19,655.53/27,129.17 = 11,702.30/x
  3. Step 3: Cross multiply
    19,655.53x = 27,129.17 × 11,702.30
  4. Step 4: Simplify right side
    19,655.53x = 317,473,579.70
  5. Step 5: Solve for x
    x = 317,473,579.70/19,655.53
  6. Step 6: Final answer
    x = 16,151.87

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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.