Home / 20,156.17-27,827.97-12,988.62

Finding the Fourth Proportional to 20,156.17, 27,827.97 and 12,988.62

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Solution

The fourth proportional to 20,156.17, 27,827.97 and 12,988.62 is: 17,932.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,156.17 : 27,827.97 = 12,988.62 : x
  2. Step 2: Convert to fraction form
    20,156.17/27,827.97 = 12,988.62/x
  3. Step 3: Cross multiply
    20,156.17x = 27,827.97 × 12,988.62
  4. Step 4: Simplify right side
    20,156.17x = 361,446,927.70
  5. Step 5: Solve for x
    x = 361,446,927.70/20,156.17
  6. Step 6: Final answer
    x = 17,932.32

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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.