Home / 28,234.12-38,961.54-15,658.12

Finding the Fourth Proportional to 28,234.12, 38,961.54 and 15,658.12

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Solution

The fourth proportional to 28,234.12, 38,961.54 and 15,658.12 is: 21,607.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,234.12 : 38,961.54 = 15,658.12 : x
  2. Step 2: Convert to fraction form
    28,234.12/38,961.54 = 15,658.12/x
  3. Step 3: Cross multiply
    28,234.12x = 38,961.54 × 15,658.12
  4. Step 4: Simplify right side
    28,234.12x = 610,064,468.70
  5. Step 5: Solve for x
    x = 610,064,468.70/28,234.12
  6. Step 6: Final answer
    x = 21,607.35

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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.