Home / 20,294.32-30,447.60-7,815.52

Finding the Fourth Proportional to 20,294.32, 30,447.60 and 7,815.52

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Solution

The fourth proportional to 20,294.32, 30,447.60 and 7,815.52 is: 11,725.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,294.32 : 30,447.60 = 7,815.52 : x
  2. Step 2: Convert to fraction form
    20,294.32/30,447.60 = 7,815.52/x
  3. Step 3: Cross multiply
    20,294.32x = 30,447.60 × 7,815.52
  4. Step 4: Simplify right side
    20,294.32x = 237,963,826.75
  5. Step 5: Solve for x
    x = 237,963,826.75/20,294.32
  6. Step 6: Final answer
    x = 11,725.64

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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.