Home / 15,537.11-21,440.47-8,821.85

Finding the Fourth Proportional to 15,537.11, 21,440.47 and 8,821.85

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Solution

The fourth proportional to 15,537.11, 21,440.47 and 8,821.85 is: 12,173.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,537.11 : 21,440.47 = 8,821.85 : x
  2. Step 2: Convert to fraction form
    15,537.11/21,440.47 = 8,821.85/x
  3. Step 3: Cross multiply
    15,537.11x = 21,440.47 × 8,821.85
  4. Step 4: Simplify right side
    15,537.11x = 189,144,641.82
  5. Step 5: Solve for x
    x = 189,144,641.82/15,537.11
  6. Step 6: Final answer
    x = 12,173.74

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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.