Home / 13,323.66-18,387.20-7,660.18

Finding the Fourth Proportional to 13,323.66, 18,387.20 and 7,660.18

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Solution

The fourth proportional to 13,323.66, 18,387.20 and 7,660.18 is: 10,571.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,323.66 : 18,387.20 = 7,660.18 : x
  2. Step 2: Convert to fraction form
    13,323.66/18,387.20 = 7,660.18/x
  3. Step 3: Cross multiply
    13,323.66x = 18,387.20 × 7,660.18
  4. Step 4: Simplify right side
    13,323.66x = 140,849,261.70
  5. Step 5: Solve for x
    x = 140,849,261.70/13,323.66
  6. Step 6: Final answer
    x = 10,571.36

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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.