Home / 13,420.11-20,130.18-5,098.17

Finding the Fourth Proportional to 13,420.11, 20,130.18 and 5,098.17

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Solution

The fourth proportional to 13,420.11, 20,130.18 and 5,098.17 is: 7,647.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,420.11 : 20,130.18 = 5,098.17 : x
  2. Step 2: Convert to fraction form
    13,420.11/20,130.18 = 5,098.17/x
  3. Step 3: Cross multiply
    13,420.11x = 20,130.18 × 5,098.17
  4. Step 4: Simplify right side
    13,420.11x = 102,627,079.77
  5. Step 5: Solve for x
    x = 102,627,079.77/13,420.11
  6. Step 6: Final answer
    x = 7,647.26

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.