Home / 12,423.29-18,634.93-8,515.85

Finding the Fourth Proportional to 12,423.29, 18,634.93 and 8,515.85

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Solution

The fourth proportional to 12,423.29, 18,634.93 and 8,515.85 is: 12,773.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,423.29 : 18,634.93 = 8,515.85 : x
  2. Step 2: Convert to fraction form
    12,423.29/18,634.93 = 8,515.85/x
  3. Step 3: Cross multiply
    12,423.29x = 18,634.93 × 8,515.85
  4. Step 4: Simplify right side
    12,423.29x = 158,692,154.18
  5. Step 5: Solve for x
    x = 158,692,154.18/12,423.29
  6. Step 6: Final answer
    x = 12,773.77

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.