Home / 13,146.20-18,140.95-7,177.51

Finding the Fourth Proportional to 13,146.20, 18,140.95 and 7,177.51

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Solution

The fourth proportional to 13,146.20, 18,140.95 and 7,177.51 is: 9,904.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,146.20 : 18,140.95 = 7,177.51 : x
  2. Step 2: Convert to fraction form
    13,146.20/18,140.95 = 7,177.51/x
  3. Step 3: Cross multiply
    13,146.20x = 18,140.95 × 7,177.51
  4. Step 4: Simplify right side
    13,146.20x = 130,206,723.44
  5. Step 5: Solve for x
    x = 130,206,723.44/13,146.20
  6. Step 6: Final answer
    x = 9,904.52

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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.