Home / 23,115.56-31,899.15-12,906.74

Finding the Fourth Proportional to 23,115.56, 31,899.15 and 12,906.74

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Solution

The fourth proportional to 23,115.56, 31,899.15 and 12,906.74 is: 17,811.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,115.56 : 31,899.15 = 12,906.74 : x
  2. Step 2: Convert to fraction form
    23,115.56/31,899.15 = 12,906.74/x
  3. Step 3: Cross multiply
    23,115.56x = 31,899.15 × 12,906.74
  4. Step 4: Simplify right side
    23,115.56x = 411,714,115.02
  5. Step 5: Solve for x
    x = 411,714,115.02/23,115.56
  6. Step 6: Final answer
    x = 17,811.13

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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.