Home / 20,926.13-28,881.72-11,974.01

Finding the Fourth Proportional to 20,926.13, 28,881.72 and 11,974.01

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Solution

The fourth proportional to 20,926.13, 28,881.72 and 11,974.01 is: 16,526.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,926.13 : 28,881.72 = 11,974.01 : x
  2. Step 2: Convert to fraction form
    20,926.13/28,881.72 = 11,974.01/x
  3. Step 3: Cross multiply
    20,926.13x = 28,881.72 × 11,974.01
  4. Step 4: Simplify right side
    20,926.13x = 345,829,859.69
  5. Step 5: Solve for x
    x = 345,829,859.69/20,926.13
  6. Step 6: Final answer
    x = 16,526.23

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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.