Home / 15,017.04-20,724.78-8,729

Finding the Fourth Proportional to 15,017.04, 20,724.78 and 8,729

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Solution

The fourth proportional to 15,017.04, 20,724.78 and 8,729 is: 12,046.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,017.04 : 20,724.78 = 8,729 : x
  2. Step 2: Convert to fraction form
    15,017.04/20,724.78 = 8,729/x
  3. Step 3: Cross multiply
    15,017.04x = 20,724.78 × 8,729
  4. Step 4: Simplify right side
    15,017.04x = 180,906,604.62
  5. Step 5: Solve for x
    x = 180,906,604.62/15,017.04
  6. Step 6: Final answer
    x = 12,046.76

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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.