Home / 12,140.60-18,167.70-8,425.40

Finding the Fourth Proportional to 12,140.60, 18,167.70 and 8,425.40

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Solution

The fourth proportional to 12,140.60, 18,167.70 and 8,425.40 is: 12,608.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,140.60 : 18,167.70 = 8,425.40 : x
  2. Step 2: Convert to fraction form
    12,140.60/18,167.70 = 8,425.40/x
  3. Step 3: Cross multiply
    12,140.60x = 18,167.70 × 8,425.40
  4. Step 4: Simplify right side
    12,140.60x = 153,070,139.58
  5. Step 5: Solve for x
    x = 153,070,139.58/12,140.60
  6. Step 6: Final answer
    x = 12,608.12

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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.