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Finding the Fourth Proportional to 17,686.62, 24,428.79 and 15,357.87

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Solution

The fourth proportional to 17,686.62, 24,428.79 and 15,357.87 is: 21,212.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,686.62 : 24,428.79 = 15,357.87 : x
  2. Step 2: Convert to fraction form
    17,686.62/24,428.79 = 15,357.87/x
  3. Step 3: Cross multiply
    17,686.62x = 24,428.79 × 15,357.87
  4. Step 4: Simplify right side
    17,686.62x = 375,174,181.08
  5. Step 5: Solve for x
    x = 375,174,181.08/17,686.62
  6. Step 6: Final answer
    x = 21,212.32

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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.