Home / 28,797.15-39,731.76-18,740.37

Finding the Fourth Proportional to 28,797.15, 39,731.76 and 18,740.37

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Solution

The fourth proportional to 28,797.15, 39,731.76 and 18,740.37 is: 25,856.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,797.15 : 39,731.76 = 18,740.37 : x
  2. Step 2: Convert to fraction form
    28,797.15/39,731.76 = 18,740.37/x
  3. Step 3: Cross multiply
    28,797.15x = 39,731.76 × 18,740.37
  4. Step 4: Simplify right side
    28,797.15x = 744,587,883.15
  5. Step 5: Solve for x
    x = 744,587,883.15/28,797.15
  6. Step 6: Final answer
    x = 25,856.30

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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.