Home / 15,411.12-21,267.42-8,337.60

Finding the Fourth Proportional to 15,411.12, 21,267.42 and 8,337.60

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Solution

The fourth proportional to 15,411.12, 21,267.42 and 8,337.60 is: 11,505.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,411.12 : 21,267.42 = 8,337.60 : x
  2. Step 2: Convert to fraction form
    15,411.12/21,267.42 = 8,337.60/x
  3. Step 3: Cross multiply
    15,411.12x = 21,267.42 × 8,337.60
  4. Step 4: Simplify right side
    15,411.12x = 177,319,240.99
  5. Step 5: Solve for x
    x = 177,319,240.99/15,411.12
  6. Step 6: Final answer
    x = 11,505.93

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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.