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Finding the Fourth Proportional to 22,179.98, 30,597.76 and 15,012.40

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Solution

The fourth proportional to 22,179.98, 30,597.76 and 15,012.40 is: 20,709.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,179.98 : 30,597.76 = 15,012.40 : x
  2. Step 2: Convert to fraction form
    22,179.98/30,597.76 = 15,012.40/x
  3. Step 3: Cross multiply
    22,179.98x = 30,597.76 × 15,012.40
  4. Step 4: Simplify right side
    22,179.98x = 459,345,812.22
  5. Step 5: Solve for x
    x = 459,345,812.22/22,179.98
  6. Step 6: Final answer
    x = 20,709.93

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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.