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Finding the Fourth Proportional to 15,146.01, 20,901 and 8,431.41

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Solution

The fourth proportional to 15,146.01, 20,901 and 8,431.41 is: 11,635.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,146.01 : 20,901 = 8,431.41 : x
  2. Step 2: Convert to fraction form
    15,146.01/20,901 = 8,431.41/x
  3. Step 3: Cross multiply
    15,146.01x = 20,901 × 8,431.41
  4. Step 4: Simplify right side
    15,146.01x = 176,224,900.41
  5. Step 5: Solve for x
    x = 176,224,900.41/15,146.01
  6. Step 6: Final answer
    x = 11,635.07

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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.