Home / 12,247.29-16,909.60-8,220.15

Finding the Fourth Proportional to 12,247.29, 16,909.60 and 8,220.15

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Solution

The fourth proportional to 12,247.29, 16,909.60 and 8,220.15 is: 11,349.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,247.29 : 16,909.60 = 8,220.15 : x
  2. Step 2: Convert to fraction form
    12,247.29/16,909.60 = 8,220.15/x
  3. Step 3: Cross multiply
    12,247.29x = 16,909.60 × 8,220.15
  4. Step 4: Simplify right side
    12,247.29x = 138,999,470.29
  5. Step 5: Solve for x
    x = 138,999,470.29/12,247.29
  6. Step 6: Final answer
    x = 11,349.41

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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.