Home / 15,276.18-21,082.38-8,989.80

Finding the Fourth Proportional to 15,276.18, 21,082.38 and 8,989.80

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Solution

The fourth proportional to 15,276.18, 21,082.38 and 8,989.80 is: 12,406.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,276.18 : 21,082.38 = 8,989.80 : x
  2. Step 2: Convert to fraction form
    15,276.18/21,082.38 = 8,989.80/x
  3. Step 3: Cross multiply
    15,276.18x = 21,082.38 × 8,989.80
  4. Step 4: Simplify right side
    15,276.18x = 189,526,379.72
  5. Step 5: Solve for x
    x = 189,526,379.72/15,276.18
  6. Step 6: Final answer
    x = 12,406.66

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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.