Home / 13,446.41-18,555.89-7,478.73

Finding the Fourth Proportional to 13,446.41, 18,555.89 and 7,478.73

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Solution

The fourth proportional to 13,446.41, 18,555.89 and 7,478.73 is: 10,320.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,446.41 : 18,555.89 = 7,478.73 : x
  2. Step 2: Convert to fraction form
    13,446.41/18,555.89 = 7,478.73/x
  3. Step 3: Cross multiply
    13,446.41x = 18,555.89 × 7,478.73
  4. Step 4: Simplify right side
    13,446.41x = 138,774,453.83
  5. Step 5: Solve for x
    x = 138,774,453.83/13,446.41
  6. Step 6: Final answer
    x = 10,320.56

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Half scale
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Double scale
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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.