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Finding the Fourth Proportional to 10,000.31, 15,003.20 and 4,376.96

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Solution

The fourth proportional to 10,000.31, 15,003.20 and 4,376.96 is: 6,566.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,000.31 : 15,003.20 = 4,376.96 : x
  2. Step 2: Convert to fraction form
    10,000.31/15,003.20 = 4,376.96/x
  3. Step 3: Cross multiply
    10,000.31x = 15,003.20 × 4,376.96
  4. Step 4: Simplify right side
    10,000.31x = 65,668,417.21
  5. Step 5: Solve for x
    x = 65,668,417.21/10,000.31
  6. Step 6: Final answer
    x = 6,566.64

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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.