Home / 15,516.09-21,412.11-8,442.52

Finding the Fourth Proportional to 15,516.09, 21,412.11 and 8,442.52

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Solution

The fourth proportional to 15,516.09, 21,412.11 and 8,442.52 is: 11,650.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,516.09 : 21,412.11 = 8,442.52 : x
  2. Step 2: Convert to fraction form
    15,516.09/21,412.11 = 8,442.52/x
  3. Step 3: Cross multiply
    15,516.09x = 21,412.11 × 8,442.52
  4. Step 4: Simplify right side
    15,516.09x = 180,772,166.92
  5. Step 5: Solve for x
    x = 180,772,166.92/15,516.09
  6. Step 6: Final answer
    x = 11,650.63

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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.