Home / 13,280.20-19,920.30-6,368.20

Finding the Fourth Proportional to 13,280.20, 19,920.30 and 6,368.20

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Solution

The fourth proportional to 13,280.20, 19,920.30 and 6,368.20 is: 9,552.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,280.20 : 19,920.30 = 6,368.20 : x
  2. Step 2: Convert to fraction form
    13,280.20/19,920.30 = 6,368.20/x
  3. Step 3: Cross multiply
    13,280.20x = 19,920.30 × 6,368.20
  4. Step 4: Simplify right side
    13,280.20x = 126,856,454.46
  5. Step 5: Solve for x
    x = 126,856,454.46/13,280.20
  6. Step 6: Final answer
    x = 9,552.30

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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.