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Finding the Fourth Proportional to 18,574.80, 27,829.80 and 17,408.40

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Solution

The fourth proportional to 18,574.80, 27,829.80 and 17,408.40 is: 26,082.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,574.80 : 27,829.80 = 17,408.40 : x
  2. Step 2: Convert to fraction form
    18,574.80/27,829.80 = 17,408.40/x
  3. Step 3: Cross multiply
    18,574.80x = 27,829.80 × 17,408.40
  4. Step 4: Simplify right side
    18,574.80x = 484,472,290.32
  5. Step 5: Solve for x
    x = 484,472,290.32/18,574.80
  6. Step 6: Final answer
    x = 26,082.23

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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.