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Finding the Fourth Proportional to 22,247.19, 30,712.19 and 12,813.93

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Solution

The fourth proportional to 22,247.19, 30,712.19 and 12,813.93 is: 17,689.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,247.19 : 30,712.19 = 12,813.93 : x
  2. Step 2: Convert to fraction form
    22,247.19/30,712.19 = 12,813.93/x
  3. Step 3: Cross multiply
    22,247.19x = 30,712.19 × 12,813.93
  4. Step 4: Simplify right side
    22,247.19x = 393,543,788.74
  5. Step 5: Solve for x
    x = 393,543,788.74/22,247.19
  6. Step 6: Final answer
    x = 17,689.60

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Half scale
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Double scale
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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.