Home / 10,549.70-15,815.22-8,999.66

Finding the Fourth Proportional to 10,549.70, 15,815.22 and 8,999.66

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Solution

The fourth proportional to 10,549.70, 15,815.22 and 8,999.66 is: 13,491.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,549.70 : 15,815.22 = 8,999.66 : x
  2. Step 2: Convert to fraction form
    10,549.70/15,815.22 = 8,999.66/x
  3. Step 3: Cross multiply
    10,549.70x = 15,815.22 × 8,999.66
  4. Step 4: Simplify right side
    10,549.70x = 142,331,602.83
  5. Step 5: Solve for x
    x = 142,331,602.83/10,549.70
  6. Step 6: Final answer
    x = 13,491.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.