Home / 13,725.20-20,535.80-9,117.20

Finding the Fourth Proportional to 13,725.20, 20,535.80 and 9,117.20

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Solution

The fourth proportional to 13,725.20, 20,535.80 and 9,117.20 is: 13,641.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,725.20 : 20,535.80 = 9,117.20 : x
  2. Step 2: Convert to fraction form
    13,725.20/20,535.80 = 9,117.20/x
  3. Step 3: Cross multiply
    13,725.20x = 20,535.80 × 9,117.20
  4. Step 4: Simplify right side
    13,725.20x = 187,228,995.76
  5. Step 5: Solve for x
    x = 187,228,995.76/13,725.20
  6. Step 6: Final answer
    x = 13,641.26

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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.