Home / 20,315.97-28,037.41-11,364.30

Finding the Fourth Proportional to 20,315.97, 28,037.41 and 11,364.30

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Solution

The fourth proportional to 20,315.97, 28,037.41 and 11,364.30 is: 15,683.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,315.97 : 28,037.41 = 11,364.30 : x
  2. Step 2: Convert to fraction form
    20,315.97/28,037.41 = 11,364.30/x
  3. Step 3: Cross multiply
    20,315.97x = 28,037.41 × 11,364.30
  4. Step 4: Simplify right side
    20,315.97x = 318,625,510.05
  5. Step 5: Solve for x
    x = 318,625,510.05/20,315.97
  6. Step 6: Final answer
    x = 15,683.50

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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.