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Finding the Fourth Proportional to 15,603.14, 21,526.29 and 9,936.88

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Solution

The fourth proportional to 15,603.14, 21,526.29 and 9,936.88 is: 13,709.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,603.14 : 21,526.29 = 9,936.88 : x
  2. Step 2: Convert to fraction form
    15,603.14/21,526.29 = 9,936.88/x
  3. Step 3: Cross multiply
    15,603.14x = 21,526.29 × 9,936.88
  4. Step 4: Simplify right side
    15,603.14x = 213,904,085.80
  5. Step 5: Solve for x
    x = 213,904,085.80/15,603.14
  6. Step 6: Final answer
    x = 13,709.04

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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.