Home / 12,139.12-16,752.84-6,761.99

Finding the Fourth Proportional to 12,139.12, 16,752.84 and 6,761.99

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Solution

The fourth proportional to 12,139.12, 16,752.84 and 6,761.99 is: 9,332.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,139.12 : 16,752.84 = 6,761.99 : x
  2. Step 2: Convert to fraction form
    12,139.12/16,752.84 = 6,761.99/x
  3. Step 3: Cross multiply
    12,139.12x = 16,752.84 × 6,761.99
  4. Step 4: Simplify right side
    12,139.12x = 113,282,418.98
  5. Step 5: Solve for x
    x = 113,282,418.98/12,139.12
  6. Step 6: Final answer
    x = 9,332.01

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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.