Home / 10,977.30-15,150.78-7,002.90

Finding the Fourth Proportional to 10,977.30, 15,150.78 and 7,002.90

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Solution

The fourth proportional to 10,977.30, 15,150.78 and 7,002.90 is: 9,665.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,977.30 : 15,150.78 = 7,002.90 : x
  2. Step 2: Convert to fraction form
    10,977.30/15,150.78 = 7,002.90/x
  3. Step 3: Cross multiply
    10,977.30x = 15,150.78 × 7,002.90
  4. Step 4: Simplify right side
    10,977.30x = 106,099,397.26
  5. Step 5: Solve for x
    x = 106,099,397.26/10,977.30
  6. Step 6: Final answer
    x = 9,665.35

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.