Home / 15,432.40-21,296.71-8,358.82

Finding the Fourth Proportional to 15,432.40, 21,296.71 and 8,358.82

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Solution

The fourth proportional to 15,432.40, 21,296.71 and 8,358.82 is: 11,535.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,432.40 : 21,296.71 = 8,358.82 : x
  2. Step 2: Convert to fraction form
    15,432.40/21,296.71 = 8,358.82/x
  3. Step 3: Cross multiply
    15,432.40x = 21,296.71 × 8,358.82
  4. Step 4: Simplify right side
    15,432.40x = 178,015,370.83
  5. Step 5: Solve for x
    x = 178,015,370.83/15,432.40
  6. Step 6: Final answer
    x = 11,535.17

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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.