Home / 13,423.11-18,523.85-7,454.76

Finding the Fourth Proportional to 13,423.11, 18,523.85 and 7,454.76

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Solution

The fourth proportional to 13,423.11, 18,523.85 and 7,454.76 is: 10,287.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,423.11 : 18,523.85 = 7,454.76 : x
  2. Step 2: Convert to fraction form
    13,423.11/18,523.85 = 7,454.76/x
  3. Step 3: Cross multiply
    13,423.11x = 18,523.85 × 7,454.76
  4. Step 4: Simplify right side
    13,423.11x = 138,090,856.03
  5. Step 5: Solve for x
    x = 138,090,856.03/13,423.11
  6. Step 6: Final answer
    x = 10,287.55

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Half scale
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Double scale
Find fourth proportional to 13,424.11, 18,525.23 and 7,455.76
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.