Home / 10,965.12-16,437.60-4,387.20

Finding the Fourth Proportional to 10,965.12, 16,437.60 and 4,387.20

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Solution

The fourth proportional to 10,965.12, 16,437.60 and 4,387.20 is: 6,576.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,965.12 : 16,437.60 = 4,387.20 : x
  2. Step 2: Convert to fraction form
    10,965.12/16,437.60 = 4,387.20/x
  3. Step 3: Cross multiply
    10,965.12x = 16,437.60 × 4,387.20
  4. Step 4: Simplify right side
    10,965.12x = 72,115,038.72
  5. Step 5: Solve for x
    x = 72,115,038.72/10,965.12
  6. Step 6: Final answer
    x = 6,576.77

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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.