Home / 12,456.09-17,190.26-7,612.90

Finding the Fourth Proportional to 12,456.09, 17,190.26 and 7,612.90

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Solution

The fourth proportional to 12,456.09, 17,190.26 and 7,612.90 is: 10,506.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,456.09 : 17,190.26 = 7,612.90 : x
  2. Step 2: Convert to fraction form
    12,456.09/17,190.26 = 7,612.90/x
  3. Step 3: Cross multiply
    12,456.09x = 17,190.26 × 7,612.90
  4. Step 4: Simplify right side
    12,456.09x = 130,867,677.86
  5. Step 5: Solve for x
    x = 130,867,677.86/12,456.09
  6. Step 6: Final answer
    x = 10,506.32

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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.