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Finding the Fourth Proportional to 15,221.95, 22,817.98 and 7,322.29

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Solution

The fourth proportional to 15,221.95, 22,817.98 and 7,322.29 is: 10,976.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,221.95 : 22,817.98 = 7,322.29 : x
  2. Step 2: Convert to fraction form
    15,221.95/22,817.98 = 7,322.29/x
  3. Step 3: Cross multiply
    15,221.95x = 22,817.98 × 7,322.29
  4. Step 4: Simplify right side
    15,221.95x = 167,079,866.77
  5. Step 5: Solve for x
    x = 167,079,866.77/15,221.95
  6. Step 6: Final answer
    x = 10,976.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.