Home / 10,319.28-15,479.52-4,078.80

Finding the Fourth Proportional to 10,319.28, 15,479.52 and 4,078.80

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Solution

The fourth proportional to 10,319.28, 15,479.52 and 4,078.80 is: 6,118.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,319.28 : 15,479.52 = 4,078.80 : x
  2. Step 2: Convert to fraction form
    10,319.28/15,479.52 = 4,078.80/x
  3. Step 3: Cross multiply
    10,319.28x = 15,479.52 × 4,078.80
  4. Step 4: Simplify right side
    10,319.28x = 63,137,866.18
  5. Step 5: Solve for x
    x = 63,137,866.18/10,319.28
  6. Step 6: Final answer
    x = 6,118.44

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1.5x scale

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.