Home / 10,487.65-15,734.21-3,913.89

Finding the Fourth Proportional to 10,487.65, 15,734.21 and 3,913.89

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Solution

The fourth proportional to 10,487.65, 15,734.21 and 3,913.89 is: 5,871.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,487.65 : 15,734.21 = 3,913.89 : x
  2. Step 2: Convert to fraction form
    10,487.65/15,734.21 = 3,913.89/x
  3. Step 3: Cross multiply
    10,487.65x = 15,734.21 × 3,913.89
  4. Step 4: Simplify right side
    10,487.65x = 61,581,967.18
  5. Step 5: Solve for x
    x = 61,581,967.18/10,487.65
  6. Step 6: Final answer
    x = 5,871.86

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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.