Home / 12,826,778.32-17,696,029.28-7,320,459.12

Finding the Fourth Proportional to 12,826,778.32, 17,696,029.28 and 7,320,459.12

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Solution

The fourth proportional to 12,826,778.32, 17,696,029.28 and 7,320,459.12 is: 10,099,422.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,826,778.32 : 17,696,029.28 = 7,320,459.12 : x
  2. Step 2: Convert to fraction form
    12,826,778.32/17,696,029.28 = 7,320,459.12/x
  3. Step 3: Cross multiply
    12,826,778.32x = 17,696,029.28 × 7,320,459.12
  4. Step 4: Simplify right side
    12,826,778.32x = 129,543,058,930,563.05
  5. Step 5: Solve for x
    x = 129,543,058,930,563.05/12,826,778.32
  6. Step 6: Final answer
    x = 10,099,422.92

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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.