Home / 12,308.05-18,470.29-9,191.58

Finding the Fourth Proportional to 12,308.05, 18,470.29 and 9,191.58

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Solution

The fourth proportional to 12,308.05, 18,470.29 and 9,191.58 is: 13,793.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,308.05 : 18,470.29 = 9,191.58 : x
  2. Step 2: Convert to fraction form
    12,308.05/18,470.29 = 9,191.58/x
  3. Step 3: Cross multiply
    12,308.05x = 18,470.29 × 9,191.58
  4. Step 4: Simplify right side
    12,308.05x = 169,771,148.16
  5. Step 5: Solve for x
    x = 169,771,148.16/12,308.05
  6. Step 6: Final answer
    x = 13,793.50

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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.