Home / 13,447.46-18,555.23-7,478.34

Finding the Fourth Proportional to 13,447.46, 18,555.23 and 7,478.34

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Solution

The fourth proportional to 13,447.46, 18,555.23 and 7,478.34 is: 10,318.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,447.46 : 18,555.23 = 7,478.34 : x
  2. Step 2: Convert to fraction form
    13,447.46/18,555.23 = 7,478.34/x
  3. Step 3: Cross multiply
    13,447.46x = 18,555.23 × 7,478.34
  4. Step 4: Simplify right side
    13,447.46x = 138,762,318.72
  5. Step 5: Solve for x
    x = 138,762,318.72/13,447.46
  6. Step 6: Final answer
    x = 10,318.85

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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.