Home / 12,407.40-17,122.28-6,742.19

Finding the Fourth Proportional to 12,407.40, 17,122.28 and 6,742.19

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Solution

The fourth proportional to 12,407.40, 17,122.28 and 6,742.19 is: 9,304.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,407.40 : 17,122.28 = 6,742.19 : x
  2. Step 2: Convert to fraction form
    12,407.40/17,122.28 = 6,742.19/x
  3. Step 3: Cross multiply
    12,407.40x = 17,122.28 × 6,742.19
  4. Step 4: Simplify right side
    12,407.40x = 115,441,664.99
  5. Step 5: Solve for x
    x = 115,441,664.99/12,407.40
  6. Step 6: Final answer
    x = 9,304.26

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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.