Home / 20,936.81-28,862.92-14,966.30

Finding the Fourth Proportional to 20,936.81, 28,862.92 and 14,966.30

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Solution

The fourth proportional to 20,936.81, 28,862.92 and 14,966.30 is: 20,632.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,936.81 : 28,862.92 = 14,966.30 : x
  2. Step 2: Convert to fraction form
    20,936.81/28,862.92 = 14,966.30/x
  3. Step 3: Cross multiply
    20,936.81x = 28,862.92 × 14,966.30
  4. Step 4: Simplify right side
    20,936.81x = 431,971,119.60
  5. Step 5: Solve for x
    x = 431,971,119.60/20,936.81
  6. Step 6: Final answer
    x = 20,632.14

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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.