Home / 22,785.45-31,443.18-12,436.80

Finding the Fourth Proportional to 22,785.45, 31,443.18 and 12,436.80

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Solution

The fourth proportional to 22,785.45, 31,443.18 and 12,436.80 is: 17,162.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,785.45 : 31,443.18 = 12,436.80 : x
  2. Step 2: Convert to fraction form
    22,785.45/31,443.18 = 12,436.80/x
  3. Step 3: Cross multiply
    22,785.45x = 31,443.18 × 12,436.80
  4. Step 4: Simplify right side
    22,785.45x = 391,052,541.02
  5. Step 5: Solve for x
    x = 391,052,541.02/22,785.45
  6. Step 6: Final answer
    x = 17,162.38

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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.