Home / 15,491.11-21,373.16-8,776.59

Finding the Fourth Proportional to 15,491.11, 21,373.16 and 8,776.59

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Solution

The fourth proportional to 15,491.11, 21,373.16 and 8,776.59 is: 12,109.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,491.11 : 21,373.16 = 8,776.59 : x
  2. Step 2: Convert to fraction form
    15,491.11/21,373.16 = 8,776.59/x
  3. Step 3: Cross multiply
    15,491.11x = 21,373.16 × 8,776.59
  4. Step 4: Simplify right side
    15,491.11x = 187,583,418.44
  5. Step 5: Solve for x
    x = 187,583,418.44/15,491.11
  6. Step 6: Final answer
    x = 12,109.11

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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.