Home / 35,711.54-53,568.32-13,520.78

Finding the Fourth Proportional to 35,711.54, 53,568.32 and 13,520.78

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Solution

The fourth proportional to 35,711.54, 53,568.32 and 13,520.78 is: 20,281.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,711.54 : 53,568.32 = 13,520.78 : x
  2. Step 2: Convert to fraction form
    35,711.54/53,568.32 = 13,520.78/x
  3. Step 3: Cross multiply
    35,711.54x = 53,568.32 × 13,520.78
  4. Step 4: Simplify right side
    35,711.54x = 724,285,134.24
  5. Step 5: Solve for x
    x = 724,285,134.24/35,711.54
  6. Step 6: Final answer
    x = 20,281.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.