Home / 20,488.40-30,732.60-15,304.40

Finding the Fourth Proportional to 20,488.40, 30,732.60 and 15,304.40

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Solution

The fourth proportional to 20,488.40, 30,732.60 and 15,304.40 is: 22,956.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,488.40 : 30,732.60 = 15,304.40 : x
  2. Step 2: Convert to fraction form
    20,488.40/30,732.60 = 15,304.40/x
  3. Step 3: Cross multiply
    20,488.40x = 30,732.60 × 15,304.40
  4. Step 4: Simplify right side
    20,488.40x = 470,344,003.44
  5. Step 5: Solve for x
    x = 470,344,003.44/20,488.40
  6. Step 6: Final answer
    x = 22,956.60

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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.