Home / 12,447.19-18,632.40-9,308.80

Finding the Fourth Proportional to 12,447.19, 18,632.40 and 9,308.80

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Solution

The fourth proportional to 12,447.19, 18,632.40 and 9,308.80 is: 13,934.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,447.19 : 18,632.40 = 9,308.80 : x
  2. Step 2: Convert to fraction form
    12,447.19/18,632.40 = 9,308.80/x
  3. Step 3: Cross multiply
    12,447.19x = 18,632.40 × 9,308.80
  4. Step 4: Simplify right side
    12,447.19x = 173,445,285.12
  5. Step 5: Solve for x
    x = 173,445,285.12/12,447.19
  6. Step 6: Final answer
    x = 13,934.49

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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.