Home / 15,269.93-21,072.48-8,555.61

Finding the Fourth Proportional to 15,269.93, 21,072.48 and 8,555.61

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Solution

The fourth proportional to 15,269.93, 21,072.48 and 8,555.61 is: 11,806.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,269.93 : 21,072.48 = 8,555.61 : x
  2. Step 2: Convert to fraction form
    15,269.93/21,072.48 = 8,555.61/x
  3. Step 3: Cross multiply
    15,269.93x = 21,072.48 × 8,555.61
  4. Step 4: Simplify right side
    15,269.93x = 180,287,815.25
  5. Step 5: Solve for x
    x = 180,287,815.25/15,269.93
  6. Step 6: Final answer
    x = 11,806.72

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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.