Home / 15,023.60-20,731.64-8,308.68

Finding the Fourth Proportional to 15,023.60, 20,731.64 and 8,308.68

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Solution

The fourth proportional to 15,023.60, 20,731.64 and 8,308.68 is: 11,465.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,023.60 : 20,731.64 = 8,308.68 : x
  2. Step 2: Convert to fraction form
    15,023.60/20,731.64 = 8,308.68/x
  3. Step 3: Cross multiply
    15,023.60x = 20,731.64 × 8,308.68
  4. Step 4: Simplify right side
    15,023.60x = 172,252,562.64
  5. Step 5: Solve for x
    x = 172,252,562.64/15,023.60
  6. Step 6: Final answer
    x = 11,465.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.