Home / 20,868.04-28,797.51-12,908.17

Finding the Fourth Proportional to 20,868.04, 28,797.51 and 12,908.17

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Solution

The fourth proportional to 20,868.04, 28,797.51 and 12,908.17 is: 17,813.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,868.04 : 28,797.51 = 12,908.17 : x
  2. Step 2: Convert to fraction form
    20,868.04/28,797.51 = 12,908.17/x
  3. Step 3: Cross multiply
    20,868.04x = 28,797.51 × 12,908.17
  4. Step 4: Simplify right side
    20,868.04x = 371,723,154.66
  5. Step 5: Solve for x
    x = 371,723,154.66/20,868.04
  6. Step 6: Final answer
    x = 17,813.04

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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.