Home / 15,516.07-21,411.54-8,442.50

Finding the Fourth Proportional to 15,516.07, 21,411.54 and 8,442.50

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Solution

The fourth proportional to 15,516.07, 21,411.54 and 8,442.50 is: 11,650.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,516.07 : 21,411.54 = 8,442.50 : x
  2. Step 2: Convert to fraction form
    15,516.07/21,411.54 = 8,442.50/x
  3. Step 3: Cross multiply
    15,516.07x = 21,411.54 × 8,442.50
  4. Step 4: Simplify right side
    15,516.07x = 180,766,819.39
  5. Step 5: Solve for x
    x = 180,766,819.39/15,516.07
  6. Step 6: Final answer
    x = 11,650.30

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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.