Home / 12,555.60-17,329.10-8,306.74

Finding the Fourth Proportional to 12,555.60, 17,329.10 and 8,306.74

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Solution

The fourth proportional to 12,555.60, 17,329.10 and 8,306.74 is: 11,464.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,555.60 : 17,329.10 = 8,306.74 : x
  2. Step 2: Convert to fraction form
    12,555.60/17,329.10 = 8,306.74/x
  3. Step 3: Cross multiply
    12,555.60x = 17,329.10 × 8,306.74
  4. Step 4: Simplify right side
    12,555.60x = 143,948,328.13
  5. Step 5: Solve for x
    x = 143,948,328.13/12,555.60
  6. Step 6: Final answer
    x = 11,464.87

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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.