Home / 18,805.12-25,951.08-10,421.62

Finding the Fourth Proportional to 18,805.12, 25,951.08 and 10,421.62

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Solution

The fourth proportional to 18,805.12, 25,951.08 and 10,421.62 is: 14,381.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,805.12 : 25,951.08 = 10,421.62 : x
  2. Step 2: Convert to fraction form
    18,805.12/25,951.08 = 10,421.62/x
  3. Step 3: Cross multiply
    18,805.12x = 25,951.08 × 10,421.62
  4. Step 4: Simplify right side
    18,805.12x = 270,452,294.35
  5. Step 5: Solve for x
    x = 270,452,294.35/18,805.12
  6. Step 6: Final answer
    x = 14,381.84

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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.