Home / 20,248.64-30,358.56-7,758.08

Finding the Fourth Proportional to 20,248.64, 30,358.56 and 7,758.08

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Solution

The fourth proportional to 20,248.64, 30,358.56 and 7,758.08 is: 11,631.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,248.64 : 30,358.56 = 7,758.08 : x
  2. Step 2: Convert to fraction form
    20,248.64/30,358.56 = 7,758.08/x
  3. Step 3: Cross multiply
    20,248.64x = 30,358.56 × 7,758.08
  4. Step 4: Simplify right side
    20,248.64x = 235,524,137.16
  5. Step 5: Solve for x
    x = 235,524,137.16/20,248.64
  6. Step 6: Final answer
    x = 11,631.60

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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.