Home / 15,515.92-21,411.33-8,442.37

Finding the Fourth Proportional to 15,515.92, 21,411.33 and 8,442.37

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Solution

The fourth proportional to 15,515.92, 21,411.33 and 8,442.37 is: 11,650.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,515.92 : 21,411.33 = 8,442.37 : x
  2. Step 2: Convert to fraction form
    15,515.92/21,411.33 = 8,442.37/x
  3. Step 3: Cross multiply
    15,515.92x = 21,411.33 × 8,442.37
  4. Step 4: Simplify right side
    15,515.92x = 180,762,370.05
  5. Step 5: Solve for x
    x = 180,762,370.05/15,515.92
  6. Step 6: Final answer
    x = 11,650.12

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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.