Home / 28,185,900.80-42,278,851.20-21,467,436.80

Finding the Fourth Proportional to 28,185,900.80, 42,278,851.20 and 21,467,436.80

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Solution

The fourth proportional to 28,185,900.80, 42,278,851.20 and 21,467,436.80 is: 32,201,155.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,185,900.80 : 42,278,851.20 = 21,467,436.80 : x
  2. Step 2: Convert to fraction form
    28,185,900.80/42,278,851.20 = 21,467,436.80/x
  3. Step 3: Cross multiply
    28,185,900.80x = 42,278,851.20 × 21,467,436.80
  4. Step 4: Simplify right side
    28,185,900.80x = 907,618,566,112,604.25
  5. Step 5: Solve for x
    x = 907,618,566,112,604.25/28,185,900.80
  6. Step 6: Final answer
    x = 32,201,155.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.