Home / 15,126.40-22,689.60-7,728.40

Finding the Fourth Proportional to 15,126.40, 22,689.60 and 7,728.40

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Solution

The fourth proportional to 15,126.40, 22,689.60 and 7,728.40 is: 11,592.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,126.40 : 22,689.60 = 7,728.40 : x
  2. Step 2: Convert to fraction form
    15,126.40/22,689.60 = 7,728.40/x
  3. Step 3: Cross multiply
    15,126.40x = 22,689.60 × 7,728.40
  4. Step 4: Simplify right side
    15,126.40x = 175,354,304.64
  5. Step 5: Solve for x
    x = 175,354,304.64/15,126.40
  6. Step 6: Final answer
    x = 11,592.60

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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.