Home / 13,447.79-18,557.68-7,397.78

Finding the Fourth Proportional to 13,447.79, 18,557.68 and 7,397.78

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Solution

The fourth proportional to 13,447.79, 18,557.68 and 7,397.78 is: 10,208.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,447.79 : 18,557.68 = 7,397.78 : x
  2. Step 2: Convert to fraction form
    13,447.79/18,557.68 = 7,397.78/x
  3. Step 3: Cross multiply
    13,447.79x = 18,557.68 × 7,397.78
  4. Step 4: Simplify right side
    13,447.79x = 137,285,620.12
  5. Step 5: Solve for x
    x = 137,285,620.12/13,447.79
  6. Step 6: Final answer
    x = 10,208.78

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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.