Home / 14,935.20-20,611.56-9,890.66

Finding the Fourth Proportional to 14,935.20, 20,611.56 and 9,890.66

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Solution

The fourth proportional to 14,935.20, 20,611.56 and 9,890.66 is: 13,649.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,935.20 : 20,611.56 = 9,890.66 : x
  2. Step 2: Convert to fraction form
    14,935.20/20,611.56 = 9,890.66/x
  3. Step 3: Cross multiply
    14,935.20x = 20,611.56 × 9,890.66
  4. Step 4: Simplify right side
    14,935.20x = 203,861,932.03
  5. Step 5: Solve for x
    x = 203,861,932.03/14,935.20
  6. Step 6: Final answer
    x = 13,649.76

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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.