Home / 10,646.20-15,959.46-5,440.60

Finding the Fourth Proportional to 10,646.20, 15,959.46 and 5,440.60

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Solution

The fourth proportional to 10,646.20, 15,959.46 and 5,440.60 is: 8,155.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,646.20 : 15,959.46 = 5,440.60 : x
  2. Step 2: Convert to fraction form
    10,646.20/15,959.46 = 5,440.60/x
  3. Step 3: Cross multiply
    10,646.20x = 15,959.46 × 5,440.60
  4. Step 4: Simplify right side
    10,646.20x = 86,829,038.08
  5. Step 5: Solve for x
    x = 86,829,038.08/10,646.20
  6. Step 6: Final answer
    x = 8,155.87

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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.