Home / 13,015.20-17,947.92-7,710.24

Finding the Fourth Proportional to 13,015.20, 17,947.92 and 7,710.24

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Solution

The fourth proportional to 13,015.20, 17,947.92 and 7,710.24 is: 10,632.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,015.20 : 17,947.92 = 7,710.24 : x
  2. Step 2: Convert to fraction form
    13,015.20/17,947.92 = 7,710.24/x
  3. Step 3: Cross multiply
    13,015.20x = 17,947.92 × 7,710.24
  4. Step 4: Simplify right side
    13,015.20x = 138,382,770.70
  5. Step 5: Solve for x
    x = 138,382,770.70/13,015.20
  6. Step 6: Final answer
    x = 10,632.40

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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.