Home / 15,488.55-21,374.82-8,775

Finding the Fourth Proportional to 15,488.55, 21,374.82 and 8,775

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Solution

The fourth proportional to 15,488.55, 21,374.82 and 8,775 is: 12,109.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,488.55 : 21,374.82 = 8,775 : x
  2. Step 2: Convert to fraction form
    15,488.55/21,374.82 = 8,775/x
  3. Step 3: Cross multiply
    15,488.55x = 21,374.82 × 8,775
  4. Step 4: Simplify right side
    15,488.55x = 187,564,045.50
  5. Step 5: Solve for x
    x = 187,564,045.50/15,488.55
  6. Step 6: Final answer
    x = 12,109.85

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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.