Home / 12,739.31-17,582.33-7,434.11

Finding the Fourth Proportional to 12,739.31, 17,582.33 and 7,434.11

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Solution

The fourth proportional to 12,739.31, 17,582.33 and 7,434.11 is: 10,260.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,739.31 : 17,582.33 = 7,434.11 : x
  2. Step 2: Convert to fraction form
    12,739.31/17,582.33 = 7,434.11/x
  3. Step 3: Cross multiply
    12,739.31x = 17,582.33 × 7,434.11
  4. Step 4: Simplify right side
    12,739.31x = 130,708,850.19
  5. Step 5: Solve for x
    x = 130,708,850.19/12,739.31
  6. Step 6: Final answer
    x = 10,260.28

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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.