Home / 20,836.17-28,767.06-12,882.87

Finding the Fourth Proportional to 20,836.17, 28,767.06 and 12,882.87

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Solution

The fourth proportional to 20,836.17, 28,767.06 and 12,882.87 is: 17,786.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,836.17 : 28,767.06 = 12,882.87 : x
  2. Step 2: Convert to fraction form
    20,836.17/28,767.06 = 12,882.87/x
  3. Step 3: Cross multiply
    20,836.17x = 28,767.06 × 12,882.87
  4. Step 4: Simplify right side
    20,836.17x = 370,602,294.26
  5. Step 5: Solve for x
    x = 370,602,294.26/20,836.17
  6. Step 6: Final answer
    x = 17,786.49

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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.