Home / 10,000.18-15,000.35-3,761.61

Finding the Fourth Proportional to 10,000.18, 15,000.35 and 3,761.61

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Solution

The fourth proportional to 10,000.18, 15,000.35 and 3,761.61 is: 5,642.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,000.18 : 15,000.35 = 3,761.61 : x
  2. Step 2: Convert to fraction form
    10,000.18/15,000.35 = 3,761.61/x
  3. Step 3: Cross multiply
    10,000.18x = 15,000.35 × 3,761.61
  4. Step 4: Simplify right side
    10,000.18x = 56,425,466.56
  5. Step 5: Solve for x
    x = 56,425,466.56/10,000.18
  6. Step 6: Final answer
    x = 5,642.45

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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.