Home / 23,145.10-31,940.36-12,534.78

Finding the Fourth Proportional to 23,145.10, 31,940.36 and 12,534.78

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Solution

The fourth proportional to 23,145.10, 31,940.36 and 12,534.78 is: 17,298.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,145.10 : 31,940.36 = 12,534.78 : x
  2. Step 2: Convert to fraction form
    23,145.10/31,940.36 = 12,534.78/x
  3. Step 3: Cross multiply
    23,145.10x = 31,940.36 × 12,534.78
  4. Step 4: Simplify right side
    23,145.10x = 400,365,385.72
  5. Step 5: Solve for x
    x = 400,365,385.72/23,145.10
  6. Step 6: Final answer
    x = 17,298.06

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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.