Home / 13,397.60-18,487.16-7,427.76

Finding the Fourth Proportional to 13,397.60, 18,487.16 and 7,427.76

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Solution

The fourth proportional to 13,397.60, 18,487.16 and 7,427.76 is: 10,249.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,397.60 : 18,487.16 = 7,427.76 : x
  2. Step 2: Convert to fraction form
    13,397.60/18,487.16 = 7,427.76/x
  3. Step 3: Cross multiply
    13,397.60x = 18,487.16 × 7,427.76
  4. Step 4: Simplify right side
    13,397.60x = 137,318,187.56
  5. Step 5: Solve for x
    x = 137,318,187.56/13,397.60
  6. Step 6: Final answer
    x = 10,249.46

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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.