Home / 13,312.14-18,372.24-7,647.48

Finding the Fourth Proportional to 13,312.14, 18,372.24 and 7,647.48

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Solution

The fourth proportional to 13,312.14, 18,372.24 and 7,647.48 is: 10,554.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,312.14 : 18,372.24 = 7,647.48 : x
  2. Step 2: Convert to fraction form
    13,312.14/18,372.24 = 7,647.48/x
  3. Step 3: Cross multiply
    13,312.14x = 18,372.24 × 7,647.48
  4. Step 4: Simplify right side
    13,312.14x = 140,501,337.96
  5. Step 5: Solve for x
    x = 140,501,337.96/13,312.14
  6. Step 6: Final answer
    x = 10,554.38

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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.