Home / 33,321.47-45,979.18-21,400.95

Finding the Fourth Proportional to 33,321.47, 45,979.18 and 21,400.95

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Solution

The fourth proportional to 33,321.47, 45,979.18 and 21,400.95 is: 29,530.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,321.47 : 45,979.18 = 21,400.95 : x
  2. Step 2: Convert to fraction form
    33,321.47/45,979.18 = 21,400.95/x
  3. Step 3: Cross multiply
    33,321.47x = 45,979.18 × 21,400.95
  4. Step 4: Simplify right side
    33,321.47x = 983,998,140.16
  5. Step 5: Solve for x
    x = 983,998,140.16/33,321.47
  6. Step 6: Final answer
    x = 29,530.45

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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.