Home / 10,880.13-15,013.45-6,403.61

Finding the Fourth Proportional to 10,880.13, 15,013.45 and 6,403.61

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Solution

The fourth proportional to 10,880.13, 15,013.45 and 6,403.61 is: 8,836.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,880.13 : 15,013.45 = 6,403.61 : x
  2. Step 2: Convert to fraction form
    10,880.13/15,013.45 = 6,403.61/x
  3. Step 3: Cross multiply
    10,880.13x = 15,013.45 × 6,403.61
  4. Step 4: Simplify right side
    10,880.13x = 96,140,246.54
  5. Step 5: Solve for x
    x = 96,140,246.54/10,880.13
  6. Step 6: Final answer
    x = 8,836.31

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1.5x scale

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.