Home / 13,298.40-19,947.60-8,632.80

Finding the Fourth Proportional to 13,298.40, 19,947.60 and 8,632.80

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Solution

The fourth proportional to 13,298.40, 19,947.60 and 8,632.80 is: 12,949.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,298.40 : 19,947.60 = 8,632.80 : x
  2. Step 2: Convert to fraction form
    13,298.40/19,947.60 = 8,632.80/x
  3. Step 3: Cross multiply
    13,298.40x = 19,947.60 × 8,632.80
  4. Step 4: Simplify right side
    13,298.40x = 172,203,641.28
  5. Step 5: Solve for x
    x = 172,203,641.28/13,298.40
  6. Step 6: Final answer
    x = 12,949.20

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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.