Home / 23,145.78-31,941.12-12,535.39

Finding the Fourth Proportional to 23,145.78, 31,941.12 and 12,535.39

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Solution

The fourth proportional to 23,145.78, 31,941.12 and 12,535.39 is: 17,298.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,145.78 : 31,941.12 = 12,535.39 : x
  2. Step 2: Convert to fraction form
    23,145.78/31,941.12 = 12,535.39/x
  3. Step 3: Cross multiply
    23,145.78x = 31,941.12 × 12,535.39
  4. Step 4: Simplify right side
    23,145.78x = 400,394,316.38
  5. Step 5: Solve for x
    x = 400,394,316.38/23,145.78
  6. Step 6: Final answer
    x = 17,298.80

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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.