Home / 12,112.60-18,125.70-8,397.40

Finding the Fourth Proportional to 12,112.60, 18,125.70 and 8,397.40

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Solution

The fourth proportional to 12,112.60, 18,125.70 and 8,397.40 is: 12,566.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,112.60 : 18,125.70 = 8,397.40 : x
  2. Step 2: Convert to fraction form
    12,112.60/18,125.70 = 8,397.40/x
  3. Step 3: Cross multiply
    12,112.60x = 18,125.70 × 8,397.40
  4. Step 4: Simplify right side
    12,112.60x = 152,208,753.18
  5. Step 5: Solve for x
    x = 152,208,753.18/12,112.60
  6. Step 6: Final answer
    x = 12,566.15

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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.