Home / 20,455.98-28,342.84-20,013.06

Finding the Fourth Proportional to 20,455.98, 28,342.84 and 20,013.06

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Solution

The fourth proportional to 20,455.98, 28,342.84 and 20,013.06 is: 27,729.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,455.98 : 28,342.84 = 20,013.06 : x
  2. Step 2: Convert to fraction form
    20,455.98/28,342.84 = 20,013.06/x
  3. Step 3: Cross multiply
    20,455.98x = 28,342.84 × 20,013.06
  4. Step 4: Simplify right side
    20,455.98x = 567,226,957.49
  5. Step 5: Solve for x
    x = 567,226,957.49/20,455.98
  6. Step 6: Final answer
    x = 27,729.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.