Home / 13,437.48-18,542.32-7,771.36

Finding the Fourth Proportional to 13,437.48, 18,542.32 and 7,771.36

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Solution

The fourth proportional to 13,437.48, 18,542.32 and 7,771.36 is: 10,723.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,437.48 : 18,542.32 = 7,771.36 : x
  2. Step 2: Convert to fraction form
    13,437.48/18,542.32 = 7,771.36/x
  3. Step 3: Cross multiply
    13,437.48x = 18,542.32 × 7,771.36
  4. Step 4: Simplify right side
    13,437.48x = 144,099,043.96
  5. Step 5: Solve for x
    x = 144,099,043.96/13,437.48
  6. Step 6: Final answer
    x = 10,723.67

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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.