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Finding the Fourth Proportional to 18,275.16, 27,400.86 and 7,182.93

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Solution

The fourth proportional to 18,275.16, 27,400.86 and 7,182.93 is: 10,769.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,275.16 : 27,400.86 = 7,182.93 : x
  2. Step 2: Convert to fraction form
    18,275.16/27,400.86 = 7,182.93/x
  3. Step 3: Cross multiply
    18,275.16x = 27,400.86 × 7,182.93
  4. Step 4: Simplify right side
    18,275.16x = 196,818,459.32
  5. Step 5: Solve for x
    x = 196,818,459.32/18,275.16
  6. Step 6: Final answer
    x = 10,769.73

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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.