Home / 28,030.78-38,685.21-20,944.90

Finding the Fourth Proportional to 28,030.78, 38,685.21 and 20,944.90

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Solution

The fourth proportional to 28,030.78, 38,685.21 and 20,944.90 is: 28,906.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,030.78 : 38,685.21 = 20,944.90 : x
  2. Step 2: Convert to fraction form
    28,030.78/38,685.21 = 20,944.90/x
  3. Step 3: Cross multiply
    28,030.78x = 38,685.21 × 20,944.90
  4. Step 4: Simplify right side
    28,030.78x = 810,257,854.93
  5. Step 5: Solve for x
    x = 810,257,854.93/28,030.78
  6. Step 6: Final answer
    x = 28,906.00

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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.