Home / 20,428.98-28,192.02-11,476.49

Finding the Fourth Proportional to 20,428.98, 28,192.02 and 11,476.49

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Solution

The fourth proportional to 20,428.98, 28,192.02 and 11,476.49 is: 15,837.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,428.98 : 28,192.02 = 11,476.49 : x
  2. Step 2: Convert to fraction form
    20,428.98/28,192.02 = 11,476.49/x
  3. Step 3: Cross multiply
    20,428.98x = 28,192.02 × 11,476.49
  4. Step 4: Simplify right side
    20,428.98x = 323,545,348.45
  5. Step 5: Solve for x
    x = 323,545,348.45/20,428.98
  6. Step 6: Final answer
    x = 15,837.56

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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.