Home / 15,267.06-21,064.61-8,978.26

Finding the Fourth Proportional to 15,267.06, 21,064.61 and 8,978.26

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Solution

The fourth proportional to 15,267.06, 21,064.61 and 8,978.26 is: 12,387.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,267.06 : 21,064.61 = 8,978.26 : x
  2. Step 2: Convert to fraction form
    15,267.06/21,064.61 = 8,978.26/x
  3. Step 3: Cross multiply
    15,267.06x = 21,064.61 × 8,978.26
  4. Step 4: Simplify right side
    15,267.06x = 189,123,545.38
  5. Step 5: Solve for x
    x = 189,123,545.38/15,267.06
  6. Step 6: Final answer
    x = 12,387.69

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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.