Home / 12,065.28-16,649.64-7,029.78

Finding the Fourth Proportional to 12,065.28, 16,649.64 and 7,029.78

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Solution

The fourth proportional to 12,065.28, 16,649.64 and 7,029.78 is: 9,700.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,065.28 : 16,649.64 = 7,029.78 : x
  2. Step 2: Convert to fraction form
    12,065.28/16,649.64 = 7,029.78/x
  3. Step 3: Cross multiply
    12,065.28x = 16,649.64 × 7,029.78
  4. Step 4: Simplify right side
    12,065.28x = 117,043,306.28
  5. Step 5: Solve for x
    x = 117,043,306.28/12,065.28
  6. Step 6: Final answer
    x = 9,700.84

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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.