Home / 14,685.75-20,266.34-8,398.13

Finding the Fourth Proportional to 14,685.75, 20,266.34 and 8,398.13

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Solution

The fourth proportional to 14,685.75, 20,266.34 and 8,398.13 is: 11,589.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,685.75 : 20,266.34 = 8,398.13 : x
  2. Step 2: Convert to fraction form
    14,685.75/20,266.34 = 8,398.13/x
  3. Step 3: Cross multiply
    14,685.75x = 20,266.34 × 8,398.13
  4. Step 4: Simplify right side
    14,685.75x = 170,199,214.62
  5. Step 5: Solve for x
    x = 170,199,214.62/14,685.75
  6. Step 6: Final answer
    x = 11,589.41

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Half scale
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Double scale
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Similar ratio
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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.