Home / 20,761.84-28,648.51-11,807.65

Finding the Fourth Proportional to 20,761.84, 28,648.51 and 11,807.65

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Solution

The fourth proportional to 20,761.84, 28,648.51 and 11,807.65 is: 16,292.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,761.84 : 28,648.51 = 11,807.65 : x
  2. Step 2: Convert to fraction form
    20,761.84/28,648.51 = 11,807.65/x
  3. Step 3: Cross multiply
    20,761.84x = 28,648.51 × 11,807.65
  4. Step 4: Simplify right side
    20,761.84x = 338,271,579.10
  5. Step 5: Solve for x
    x = 338,271,579.10/20,761.84
  6. Step 6: Final answer
    x = 16,292.95

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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.