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Finding the Fourth Proportional to 18,298.89, 27,448.20 and 5,151.20

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Solution

The fourth proportional to 18,298.89, 27,448.20 and 5,151.20 is: 7,726.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,298.89 : 27,448.20 = 5,151.20 : x
  2. Step 2: Convert to fraction form
    18,298.89/27,448.20 = 5,151.20/x
  3. Step 3: Cross multiply
    18,298.89x = 27,448.20 × 5,151.20
  4. Step 4: Simplify right side
    18,298.89x = 141,391,030.60
  5. Step 5: Solve for x
    x = 141,391,030.60/18,298.89
  6. Step 6: Final answer
    x = 7,726.75

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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.