Home / 11,216.89-15,470.22-9,869.59

Finding the Fourth Proportional to 11,216.89, 15,470.22 and 9,869.59

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Solution

The fourth proportional to 11,216.89, 15,470.22 and 9,869.59 is: 13,612.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,216.89 : 15,470.22 = 9,869.59 : x
  2. Step 2: Convert to fraction form
    11,216.89/15,470.22 = 9,869.59/x
  3. Step 3: Cross multiply
    11,216.89x = 15,470.22 × 9,869.59
  4. Step 4: Simplify right side
    11,216.89x = 152,684,728.61
  5. Step 5: Solve for x
    x = 152,684,728.61/11,216.89
  6. Step 6: Final answer
    x = 13,612.04

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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.