Home / 22,728.66-31,366.60-12,657.20

Finding the Fourth Proportional to 22,728.66, 31,366.60 and 12,657.20

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Solution

The fourth proportional to 22,728.66, 31,366.60 and 12,657.20 is: 17,467.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,728.66 : 31,366.60 = 12,657.20 : x
  2. Step 2: Convert to fraction form
    22,728.66/31,366.60 = 12,657.20/x
  3. Step 3: Cross multiply
    22,728.66x = 31,366.60 × 12,657.20
  4. Step 4: Simplify right side
    22,728.66x = 397,013,329.52
  5. Step 5: Solve for x
    x = 397,013,329.52/22,728.66
  6. Step 6: Final answer
    x = 17,467.52

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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.