Home / 10,287.90-15,431.42-4,363.16

Finding the Fourth Proportional to 10,287.90, 15,431.42 and 4,363.16

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Solution

The fourth proportional to 10,287.90, 15,431.42 and 4,363.16 is: 6,544.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,287.90 : 15,431.42 = 4,363.16 : x
  2. Step 2: Convert to fraction form
    10,287.90/15,431.42 = 4,363.16/x
  3. Step 3: Cross multiply
    10,287.90x = 15,431.42 × 4,363.16
  4. Step 4: Simplify right side
    10,287.90x = 67,329,688.24
  5. Step 5: Solve for x
    x = 67,329,688.24/10,287.90
  6. Step 6: Final answer
    x = 6,544.55

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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.