Home / 21,135.16-29,167.14-11,703.88

Finding the Fourth Proportional to 21,135.16, 29,167.14 and 11,703.88

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Solution

The fourth proportional to 21,135.16, 29,167.14 and 11,703.88 is: 16,151.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,135.16 : 29,167.14 = 11,703.88 : x
  2. Step 2: Convert to fraction form
    21,135.16/29,167.14 = 11,703.88/x
  3. Step 3: Cross multiply
    21,135.16x = 29,167.14 × 11,703.88
  4. Step 4: Simplify right side
    21,135.16x = 341,368,706.50
  5. Step 5: Solve for x
    x = 341,368,706.50/21,135.16
  6. Step 6: Final answer
    x = 16,151.70

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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.