Home / 31,799.28-43,902.05-19,878.77

Finding the Fourth Proportional to 31,799.28, 43,902.05 and 19,878.77

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Solution

The fourth proportional to 31,799.28, 43,902.05 and 19,878.77 is: 27,444.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,799.28 : 43,902.05 = 19,878.77 : x
  2. Step 2: Convert to fraction form
    31,799.28/43,902.05 = 19,878.77/x
  3. Step 3: Cross multiply
    31,799.28x = 43,902.05 × 19,878.77
  4. Step 4: Simplify right side
    31,799.28x = 872,718,629.71
  5. Step 5: Solve for x
    x = 872,718,629.71/31,799.28
  6. Step 6: Final answer
    x = 27,444.60

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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.