Home / 13,778.38-19,014.24-7,490.62

Finding the Fourth Proportional to 13,778.38, 19,014.24 and 7,490.62

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Solution

The fourth proportional to 13,778.38, 19,014.24 and 7,490.62 is: 10,337.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,778.38 : 19,014.24 = 7,490.62 : x
  2. Step 2: Convert to fraction form
    13,778.38/19,014.24 = 7,490.62/x
  3. Step 3: Cross multiply
    13,778.38x = 19,014.24 × 7,490.62
  4. Step 4: Simplify right side
    13,778.38x = 142,428,446.43
  5. Step 5: Solve for x
    x = 142,428,446.43/13,778.38
  6. Step 6: Final answer
    x = 10,337.10

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Half scale
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Double scale
Find fourth proportional to 13,779.38, 19,015.62 and 7,491.62
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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.