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Finding the Fourth Proportional to 20,041.32, 30,068.87 and 8,955.66

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Solution

The fourth proportional to 20,041.32, 30,068.87 and 8,955.66 is: 13,436.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,041.32 : 30,068.87 = 8,955.66 : x
  2. Step 2: Convert to fraction form
    20,041.32/30,068.87 = 8,955.66/x
  3. Step 3: Cross multiply
    20,041.32x = 30,068.87 × 8,955.66
  4. Step 4: Simplify right side
    20,041.32x = 269,286,576.30
  5. Step 5: Solve for x
    x = 269,286,576.30/20,041.32
  6. Step 6: Final answer
    x = 13,436.57

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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.