Home / 23,155.78-31,955.10-12,545.44

Finding the Fourth Proportional to 23,155.78, 31,955.10 and 12,545.44

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Solution

The fourth proportional to 23,155.78, 31,955.10 and 12,545.44 is: 17,312.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,155.78 : 31,955.10 = 12,545.44 : x
  2. Step 2: Convert to fraction form
    23,155.78/31,955.10 = 12,545.44/x
  3. Step 3: Cross multiply
    23,155.78x = 31,955.10 × 12,545.44
  4. Step 4: Simplify right side
    23,155.78x = 400,890,789.74
  5. Step 5: Solve for x
    x = 400,890,789.74/23,155.78
  6. Step 6: Final answer
    x = 17,312.77

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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.