Home / 15,528.06-21,432.60-8,817.66

Finding the Fourth Proportional to 15,528.06, 21,432.60 and 8,817.66

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Solution

The fourth proportional to 15,528.06, 21,432.60 and 8,817.66 is: 12,170.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,528.06 : 21,432.60 = 8,817.66 : x
  2. Step 2: Convert to fraction form
    15,528.06/21,432.60 = 8,817.66/x
  3. Step 3: Cross multiply
    15,528.06x = 21,432.60 × 8,817.66
  4. Step 4: Simplify right side
    15,528.06x = 188,985,379.72
  5. Step 5: Solve for x
    x = 188,985,379.72/15,528.06
  6. Step 6: Final answer
    x = 12,170.57

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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.