Home / 35,620.45-49,155.33-20,512.78

Finding the Fourth Proportional to 35,620.45, 49,155.33 and 20,512.78

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Solution

The fourth proportional to 35,620.45, 49,155.33 and 20,512.78 is: 28,307.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,620.45 : 49,155.33 = 20,512.78 : x
  2. Step 2: Convert to fraction form
    35,620.45/49,155.33 = 20,512.78/x
  3. Step 3: Cross multiply
    35,620.45x = 49,155.33 × 20,512.78
  4. Step 4: Simplify right side
    35,620.45x = 1,008,312,470.12
  5. Step 5: Solve for x
    x = 1,008,312,470.12/35,620.45
  6. Step 6: Final answer
    x = 28,307.12

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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.