Home / 12,480.18-18,668.98-11,385.29

Finding the Fourth Proportional to 12,480.18, 18,668.98 and 11,385.29

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Solution

The fourth proportional to 12,480.18, 18,668.98 and 11,385.29 is: 17,031.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,480.18 : 18,668.98 = 11,385.29 : x
  2. Step 2: Convert to fraction form
    12,480.18/18,668.98 = 11,385.29/x
  3. Step 3: Cross multiply
    12,480.18x = 18,668.98 × 11,385.29
  4. Step 4: Simplify right side
    12,480.18x = 212,551,812.21
  5. Step 5: Solve for x
    x = 212,551,812.21/12,480.18
  6. Step 6: Final answer
    x = 17,031.15

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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.