Home / 15,603.20-21,531.76-8,529.72

Finding the Fourth Proportional to 15,603.20, 21,531.76 and 8,529.72

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Solution

The fourth proportional to 15,603.20, 21,531.76 and 8,529.72 is: 11,770.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,603.20 : 21,531.76 = 8,529.72 : x
  2. Step 2: Convert to fraction form
    15,603.20/21,531.76 = 8,529.72/x
  3. Step 3: Cross multiply
    15,603.20x = 21,531.76 × 8,529.72
  4. Step 4: Simplify right side
    15,603.20x = 183,659,883.91
  5. Step 5: Solve for x
    x = 183,659,883.91/15,603.20
  6. Step 6: Final answer
    x = 11,770.65

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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.