Home / 12,854.55-17,739.36-7,480.18

Finding the Fourth Proportional to 12,854.55, 17,739.36 and 7,480.18

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Solution

The fourth proportional to 12,854.55, 17,739.36 and 7,480.18 is: 10,322.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,854.55 : 17,739.36 = 7,480.18 : x
  2. Step 2: Convert to fraction form
    12,854.55/17,739.36 = 7,480.18/x
  3. Step 3: Cross multiply
    12,854.55x = 17,739.36 × 7,480.18
  4. Step 4: Simplify right side
    12,854.55x = 132,693,605.88
  5. Step 5: Solve for x
    x = 132,693,605.88/12,854.55
  6. Step 6: Final answer
    x = 10,322.70

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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.