Home / 15,411.40-21,267.68-8,337.82

Finding the Fourth Proportional to 15,411.40, 21,267.68 and 8,337.82

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Solution

The fourth proportional to 15,411.40, 21,267.68 and 8,337.82 is: 11,506.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,411.40 : 21,267.68 = 8,337.82 : x
  2. Step 2: Convert to fraction form
    15,411.40/21,267.68 = 8,337.82/x
  3. Step 3: Cross multiply
    15,411.40x = 21,267.68 × 8,337.82
  4. Step 4: Simplify right side
    15,411.40x = 177,326,087.66
  5. Step 5: Solve for x
    x = 177,326,087.66/15,411.40
  6. Step 6: Final answer
    x = 11,506.16

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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.