Home / 15,488.55-21,374.66-8,775.13

Finding the Fourth Proportional to 15,488.55, 21,374.66 and 8,775.13

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Solution

The fourth proportional to 15,488.55, 21,374.66 and 8,775.13 is: 12,109.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,488.55 : 21,374.66 = 8,775.13 : x
  2. Step 2: Convert to fraction form
    15,488.55/21,374.66 = 8,775.13/x
  3. Step 3: Cross multiply
    15,488.55x = 21,374.66 × 8,775.13
  4. Step 4: Simplify right side
    15,488.55x = 187,565,420.21
  5. Step 5: Solve for x
    x = 187,565,420.21/15,488.55
  6. Step 6: Final answer
    x = 12,109.94

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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.