Home / 12,342.60-18,470.70-8,627.40

Finding the Fourth Proportional to 12,342.60, 18,470.70 and 8,627.40

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Solution

The fourth proportional to 12,342.60, 18,470.70 and 8,627.40 is: 12,910.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,342.60 : 18,470.70 = 8,627.40 : x
  2. Step 2: Convert to fraction form
    12,342.60/18,470.70 = 8,627.40/x
  3. Step 3: Cross multiply
    12,342.60x = 18,470.70 × 8,627.40
  4. Step 4: Simplify right side
    12,342.60x = 159,354,117.18
  5. Step 5: Solve for x
    x = 159,354,117.18/12,342.60
  6. Step 6: Final answer
    x = 12,910.90

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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.