Home / 28,440.24-42,644.16-12,842.88

Finding the Fourth Proportional to 28,440.24, 42,644.16 and 12,842.88

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Solution

The fourth proportional to 28,440.24, 42,644.16 and 12,842.88 is: 19,257.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,440.24 : 42,644.16 = 12,842.88 : x
  2. Step 2: Convert to fraction form
    28,440.24/42,644.16 = 12,842.88/x
  3. Step 3: Cross multiply
    28,440.24x = 42,644.16 × 12,842.88
  4. Step 4: Simplify right side
    28,440.24x = 547,673,829.58
  5. Step 5: Solve for x
    x = 547,673,829.58/28,440.24
  6. Step 6: Final answer
    x = 19,257.00

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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.