Home / 23,098.78-31,876.40-12,890.24

Finding the Fourth Proportional to 23,098.78, 31,876.40 and 12,890.24

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Solution

The fourth proportional to 23,098.78, 31,876.40 and 12,890.24 is: 17,788.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,098.78 : 31,876.40 = 12,890.24 : x
  2. Step 2: Convert to fraction form
    23,098.78/31,876.40 = 12,890.24/x
  3. Step 3: Cross multiply
    23,098.78x = 31,876.40 × 12,890.24
  4. Step 4: Simplify right side
    23,098.78x = 410,894,446.34
  5. Step 5: Solve for x
    x = 410,894,446.34/23,098.78
  6. Step 6: Final answer
    x = 17,788.58

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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.