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Finding the Fourth Proportional to 18,808.04, 25,941.30 and 13,508.30

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Solution

The fourth proportional to 18,808.04, 25,941.30 and 13,508.30 is: 18,631.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,808.04 : 25,941.30 = 13,508.30 : x
  2. Step 2: Convert to fraction form
    18,808.04/25,941.30 = 13,508.30/x
  3. Step 3: Cross multiply
    18,808.04x = 25,941.30 × 13,508.30
  4. Step 4: Simplify right side
    18,808.04x = 350,422,862.79
  5. Step 5: Solve for x
    x = 350,422,862.79/18,808.04
  6. Step 6: Final answer
    x = 18,631.55

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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.