Home / 28,295.06-39,045.66-15,719

Finding the Fourth Proportional to 28,295.06, 39,045.66 and 15,719

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Solution

The fourth proportional to 28,295.06, 39,045.66 and 15,719 is: 21,691.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,295.06 : 39,045.66 = 15,719 : x
  2. Step 2: Convert to fraction form
    28,295.06/39,045.66 = 15,719/x
  3. Step 3: Cross multiply
    28,295.06x = 39,045.66 × 15,719
  4. Step 4: Simplify right side
    28,295.06x = 613,758,729.54
  5. Step 5: Solve for x
    x = 613,758,729.54/28,295.06
  6. Step 6: Final answer
    x = 21,691.37

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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.