Home / 10,143.10-15,207.45-3,900.70

Finding the Fourth Proportional to 10,143.10, 15,207.45 and 3,900.70

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Solution

The fourth proportional to 10,143.10, 15,207.45 and 3,900.70 is: 5,848.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,143.10 : 15,207.45 = 3,900.70 : x
  2. Step 2: Convert to fraction form
    10,143.10/15,207.45 = 3,900.70/x
  3. Step 3: Cross multiply
    10,143.10x = 15,207.45 × 3,900.70
  4. Step 4: Simplify right side
    10,143.10x = 59,319,700.22
  5. Step 5: Solve for x
    x = 59,319,700.22/10,143.10
  6. Step 6: Final answer
    x = 5,848.28

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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.