Home / 39,917.18-59,912.85-20,209.70

Finding the Fourth Proportional to 39,917.18, 59,912.85 and 20,209.70

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Solution

The fourth proportional to 39,917.18, 59,912.85 and 20,209.70 is: 30,333.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,917.18 : 59,912.85 = 20,209.70 : x
  2. Step 2: Convert to fraction form
    39,917.18/59,912.85 = 20,209.70/x
  3. Step 3: Cross multiply
    39,917.18x = 59,912.85 × 20,209.70
  4. Step 4: Simplify right side
    39,917.18x = 1,210,820,724.65
  5. Step 5: Solve for x
    x = 1,210,820,724.65/39,917.18
  6. Step 6: Final answer
    x = 30,333.32

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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.