Home / 10,638.80-15,942-7,304.88

Finding the Fourth Proportional to 10,638.80, 15,942 and 7,304.88

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Solution

The fourth proportional to 10,638.80, 15,942 and 7,304.88 is: 10,946.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,638.80 : 15,942 = 7,304.88 : x
  2. Step 2: Convert to fraction form
    10,638.80/15,942 = 7,304.88/x
  3. Step 3: Cross multiply
    10,638.80x = 15,942 × 7,304.88
  4. Step 4: Simplify right side
    10,638.80x = 116,454,396.96
  5. Step 5: Solve for x
    x = 116,454,396.96/10,638.80
  6. Step 6: Final answer
    x = 10,946.20

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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.