Home / 37,780.11-52,140.75-20,785.75

Finding the Fourth Proportional to 37,780.11, 52,140.75 and 20,785.75

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Solution

The fourth proportional to 37,780.11, 52,140.75 and 20,785.75 is: 28,686.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,780.11 : 52,140.75 = 20,785.75 : x
  2. Step 2: Convert to fraction form
    37,780.11/52,140.75 = 20,785.75/x
  3. Step 3: Cross multiply
    37,780.11x = 52,140.75 × 20,785.75
  4. Step 4: Simplify right side
    37,780.11x = 1,083,784,594.31
  5. Step 5: Solve for x
    x = 1,083,784,594.31/37,780.11
  6. Step 6: Final answer
    x = 28,686.64

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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.