Home / 57,869.91-86,811.81-20,422.25

Finding the Fourth Proportional to 57,869.91, 86,811.81 and 20,422.25

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Solution

The fourth proportional to 57,869.91, 86,811.81 and 20,422.25 is: 30,635.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,869.91 : 86,811.81 = 20,422.25 : x
  2. Step 2: Convert to fraction form
    57,869.91/86,811.81 = 20,422.25/x
  3. Step 3: Cross multiply
    57,869.91x = 86,811.81 × 20,422.25
  4. Step 4: Simplify right side
    57,869.91x = 1,772,892,486.77
  5. Step 5: Solve for x
    x = 1,772,892,486.77/57,869.91
  6. Step 6: Final answer
    x = 30,635.83

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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.