Home / 15,538.05-21,434.09-9,249.21

Finding the Fourth Proportional to 15,538.05, 21,434.09 and 9,249.21

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Solution

The fourth proportional to 15,538.05, 21,434.09 and 9,249.21 is: 12,758.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,538.05 : 21,434.09 = 9,249.21 : x
  2. Step 2: Convert to fraction form
    15,538.05/21,434.09 = 9,249.21/x
  3. Step 3: Cross multiply
    15,538.05x = 21,434.09 × 9,249.21
  4. Step 4: Simplify right side
    15,538.05x = 198,248,353.32
  5. Step 5: Solve for x
    x = 198,248,353.32/15,538.05
  6. Step 6: Final answer
    x = 12,758.90

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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.