Home / 28,491.75-42,752.21-12,701.61

Finding the Fourth Proportional to 28,491.75, 42,752.21 and 12,701.61

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Solution

The fourth proportional to 28,491.75, 42,752.21 and 12,701.61 is: 19,058.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,491.75 : 42,752.21 = 12,701.61 : x
  2. Step 2: Convert to fraction form
    28,491.75/42,752.21 = 12,701.61/x
  3. Step 3: Cross multiply
    28,491.75x = 42,752.21 × 12,701.61
  4. Step 4: Simplify right side
    28,491.75x = 543,021,834.55
  5. Step 5: Solve for x
    x = 543,021,834.55/28,491.75
  6. Step 6: Final answer
    x = 19,058.91

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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.