Home / 15,269.43-21,071.57-8,555.04

Finding the Fourth Proportional to 15,269.43, 21,071.57 and 8,555.04

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Solution

The fourth proportional to 15,269.43, 21,071.57 and 8,555.04 is: 11,805.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,269.43 : 21,071.57 = 8,555.04 : x
  2. Step 2: Convert to fraction form
    15,269.43/21,071.57 = 8,555.04/x
  3. Step 3: Cross multiply
    15,269.43x = 21,071.57 × 8,555.04
  4. Step 4: Simplify right side
    15,269.43x = 180,268,081.44
  5. Step 5: Solve for x
    x = 180,268,081.44/15,269.43
  6. Step 6: Final answer
    x = 11,805.82

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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.