Home / 28,425.12-42,656.13-12,842.88

Finding the Fourth Proportional to 28,425.12, 42,656.13 and 12,842.88

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Solution

The fourth proportional to 28,425.12, 42,656.13 and 12,842.88 is: 19,272.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,425.12 : 42,656.13 = 12,842.88 : x
  2. Step 2: Convert to fraction form
    28,425.12/42,656.13 = 12,842.88/x
  3. Step 3: Cross multiply
    28,425.12x = 42,656.13 × 12,842.88
  4. Step 4: Simplify right side
    28,425.12x = 547,827,558.85
  5. Step 5: Solve for x
    x = 547,827,558.85/28,425.12
  6. Step 6: Final answer
    x = 19,272.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.