Home / 28,222.54-42,340.86-19,918.77

Finding the Fourth Proportional to 28,222.54, 42,340.86 and 19,918.77

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Solution

The fourth proportional to 28,222.54, 42,340.86 and 19,918.77 is: 29,883.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,222.54 : 42,340.86 = 19,918.77 : x
  2. Step 2: Convert to fraction form
    28,222.54/42,340.86 = 19,918.77/x
  3. Step 3: Cross multiply
    28,222.54x = 42,340.86 × 19,918.77
  4. Step 4: Simplify right side
    28,222.54x = 843,377,851.94
  5. Step 5: Solve for x
    x = 843,377,851.94/28,222.54
  6. Step 6: Final answer
    x = 29,883.13

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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.