Home / 12,402.78-17,114.40-7,097.28

Finding the Fourth Proportional to 12,402.78, 17,114.40 and 7,097.28

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Solution

The fourth proportional to 12,402.78, 17,114.40 and 7,097.28 is: 9,793.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,402.78 : 17,114.40 = 7,097.28 : x
  2. Step 2: Convert to fraction form
    12,402.78/17,114.40 = 7,097.28/x
  3. Step 3: Cross multiply
    12,402.78x = 17,114.40 × 7,097.28
  4. Step 4: Simplify right side
    12,402.78x = 121,465,688.83
  5. Step 5: Solve for x
    x = 121,465,688.83/12,402.78
  6. Step 6: Final answer
    x = 9,793.42

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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.