Home / 35,815.28-49,421.32-20,705.56

Finding the Fourth Proportional to 35,815.28, 49,421.32 and 20,705.56

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Solution

The fourth proportional to 35,815.28, 49,421.32 and 20,705.56 is: 28,571.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,815.28 : 49,421.32 = 20,705.56 : x
  2. Step 2: Convert to fraction form
    35,815.28/49,421.32 = 20,705.56/x
  3. Step 3: Cross multiply
    35,815.28x = 49,421.32 × 20,705.56
  4. Step 4: Simplify right side
    35,815.28x = 1,023,296,106.54
  5. Step 5: Solve for x
    x = 1,023,296,106.54/35,815.28
  6. Step 6: Final answer
    x = 28,571.50

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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.