Home / 10,966.40-16,435.20-4,387.20

Finding the Fourth Proportional to 10,966.40, 16,435.20 and 4,387.20

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Solution

The fourth proportional to 10,966.40, 16,435.20 and 4,387.20 is: 6,575.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,966.40 : 16,435.20 = 4,387.20 : x
  2. Step 2: Convert to fraction form
    10,966.40/16,435.20 = 4,387.20/x
  3. Step 3: Cross multiply
    10,966.40x = 16,435.20 × 4,387.20
  4. Step 4: Simplify right side
    10,966.40x = 72,104,509.44
  5. Step 5: Solve for x
    x = 72,104,509.44/10,966.40
  6. Step 6: Final answer
    x = 6,575.04

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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.