Home / 31,001.25-42,782.01-16,854.15

Finding the Fourth Proportional to 31,001.25, 42,782.01 and 16,854.15

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Solution

The fourth proportional to 31,001.25, 42,782.01 and 16,854.15 is: 23,258.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,001.25 : 42,782.01 = 16,854.15 : x
  2. Step 2: Convert to fraction form
    31,001.25/42,782.01 = 16,854.15/x
  3. Step 3: Cross multiply
    31,001.25x = 42,782.01 × 16,854.15
  4. Step 4: Simplify right side
    31,001.25x = 721,054,413.84
  5. Step 5: Solve for x
    x = 721,054,413.84/31,001.25
  6. Step 6: Final answer
    x = 23,258.88

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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.