Home / 20,977.16-31,476.71-8,498.51

Finding the Fourth Proportional to 20,977.16, 31,476.71 and 8,498.51

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Solution

The fourth proportional to 20,977.16, 31,476.71 and 8,498.51 is: 12,752.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,977.16 : 31,476.71 = 8,498.51 : x
  2. Step 2: Convert to fraction form
    20,977.16/31,476.71 = 8,498.51/x
  3. Step 3: Cross multiply
    20,977.16x = 31,476.71 × 8,498.51
  4. Step 4: Simplify right side
    20,977.16x = 267,505,134.70
  5. Step 5: Solve for x
    x = 267,505,134.70/20,977.16
  6. Step 6: Final answer
    x = 12,752.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.