Home / 30,887,821.38-42,625,076.50-16,949,409.69

Finding the Fourth Proportional to 30,887,821.38, 42,625,076.50 and 16,949,409.69

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Solution

The fourth proportional to 30,887,821.38, 42,625,076.50 and 16,949,409.69 is: 23,390,121.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,887,821.38 : 42,625,076.50 = 16,949,409.69 : x
  2. Step 2: Convert to fraction form
    30,887,821.38/42,625,076.50 = 16,949,409.69/x
  3. Step 3: Cross multiply
    30,887,821.38x = 42,625,076.50 × 16,949,409.69
  4. Step 4: Simplify right side
    30,887,821.38x = 722,469,884,666,091.38
  5. Step 5: Solve for x
    x = 722,469,884,666,091.38/30,887,821.38
  6. Step 6: Final answer
    x = 23,390,121.17

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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.