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Finding the Fourth Proportional to 22,008, 30,357.60 and 14,455.20

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Solution

The fourth proportional to 22,008, 30,357.60 and 14,455.20 is: 19,939.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,008 : 30,357.60 = 14,455.20 : x
  2. Step 2: Convert to fraction form
    22,008/30,357.60 = 14,455.20/x
  3. Step 3: Cross multiply
    22,008x = 30,357.60 × 14,455.20
  4. Step 4: Simplify right side
    22,008x = 438,825,179.52
  5. Step 5: Solve for x
    x = 438,825,179.52/22,008
  6. Step 6: Final answer
    x = 19,939.35

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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.