Home / 15,490.26-21,376.50-8,775.86

Finding the Fourth Proportional to 15,490.26, 21,376.50 and 8,775.86

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Solution

The fourth proportional to 15,490.26, 21,376.50 and 8,775.86 is: 12,110.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,490.26 : 21,376.50 = 8,775.86 : x
  2. Step 2: Convert to fraction form
    15,490.26/21,376.50 = 8,775.86/x
  3. Step 3: Cross multiply
    15,490.26x = 21,376.50 × 8,775.86
  4. Step 4: Simplify right side
    15,490.26x = 187,597,171.29
  5. Step 5: Solve for x
    x = 187,597,171.29/15,490.26
  6. Step 6: Final answer
    x = 12,110.65

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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.