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Finding the Fourth Proportional to 22,228.80, 30,671.15 and 12,666.65

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Solution

The fourth proportional to 22,228.80, 30,671.15 and 12,666.65 is: 17,477.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,228.80 : 30,671.15 = 12,666.65 : x
  2. Step 2: Convert to fraction form
    22,228.80/30,671.15 = 12,666.65/x
  3. Step 3: Cross multiply
    22,228.80x = 30,671.15 × 12,666.65
  4. Step 4: Simplify right side
    22,228.80x = 388,500,505.46
  5. Step 5: Solve for x
    x = 388,500,505.46/22,228.80
  6. Step 6: Final answer
    x = 17,477.35

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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.