Home / 28,393.12-39,172.98-17,778.88

Finding the Fourth Proportional to 28,393.12, 39,172.98 and 17,778.88

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Solution

The fourth proportional to 28,393.12, 39,172.98 and 17,778.88 is: 24,528.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,393.12 : 39,172.98 = 17,778.88 : x
  2. Step 2: Convert to fraction form
    28,393.12/39,172.98 = 17,778.88/x
  3. Step 3: Cross multiply
    28,393.12x = 39,172.98 × 17,778.88
  4. Step 4: Simplify right side
    28,393.12x = 696,451,710.66
  5. Step 5: Solve for x
    x = 696,451,710.66/28,393.12
  6. Step 6: Final answer
    x = 24,528.89

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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.