Home / 28,807.11-39,745.49-18,750.33

Finding the Fourth Proportional to 28,807.11, 39,745.49 and 18,750.33

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Solution

The fourth proportional to 28,807.11, 39,745.49 and 18,750.33 is: 25,870.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,807.11 : 39,745.49 = 18,750.33 : x
  2. Step 2: Convert to fraction form
    28,807.11/39,745.49 = 18,750.33/x
  3. Step 3: Cross multiply
    28,807.11x = 39,745.49 × 18,750.33
  4. Step 4: Simplify right side
    28,807.11x = 745,240,959.76
  5. Step 5: Solve for x
    x = 745,240,959.76/28,807.11
  6. Step 6: Final answer
    x = 25,870.04

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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.