Home / 15,269.72-21,071.12-8,555.27

Finding the Fourth Proportional to 15,269.72, 21,071.12 and 8,555.27

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Solution

The fourth proportional to 15,269.72, 21,071.12 and 8,555.27 is: 11,805.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,269.72 : 21,071.12 = 8,555.27 : x
  2. Step 2: Convert to fraction form
    15,269.72/21,071.12 = 8,555.27/x
  3. Step 3: Cross multiply
    15,269.72x = 21,071.12 × 8,555.27
  4. Step 4: Simplify right side
    15,269.72x = 180,268,972.67
  5. Step 5: Solve for x
    x = 180,268,972.67/15,269.72
  6. Step 6: Final answer
    x = 11,805.65

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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.