Home / 12,470.20-17,210.60-7,164.90

Finding the Fourth Proportional to 12,470.20, 17,210.60 and 7,164.90

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Solution

The fourth proportional to 12,470.20, 17,210.60 and 7,164.90 is: 9,888.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,470.20 : 17,210.60 = 7,164.90 : x
  2. Step 2: Convert to fraction form
    12,470.20/17,210.60 = 7,164.90/x
  3. Step 3: Cross multiply
    12,470.20x = 17,210.60 × 7,164.90
  4. Step 4: Simplify right side
    12,470.20x = 123,312,245.85
  5. Step 5: Solve for x
    x = 123,312,245.85/12,470.20
  6. Step 6: Final answer
    x = 9,888.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.