Home / 12,312.91-18,469.90-4,517.47

Finding the Fourth Proportional to 12,312.91, 18,469.90 and 4,517.47

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Solution

The fourth proportional to 12,312.91, 18,469.90 and 4,517.47 is: 6,776.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,312.91 : 18,469.90 = 4,517.47 : x
  2. Step 2: Convert to fraction form
    12,312.91/18,469.90 = 4,517.47/x
  3. Step 3: Cross multiply
    12,312.91x = 18,469.90 × 4,517.47
  4. Step 4: Simplify right side
    12,312.91x = 83,437,126.80
  5. Step 5: Solve for x
    x = 83,437,126.80/12,312.91
  6. Step 6: Final answer
    x = 6,776.40

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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.