Home / 39,940.32-59,920.08-20,218.32

Finding the Fourth Proportional to 39,940.32, 59,920.08 and 20,218.32

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Solution

The fourth proportional to 39,940.32, 59,920.08 and 20,218.32 is: 30,332.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,940.32 : 59,920.08 = 20,218.32 : x
  2. Step 2: Convert to fraction form
    39,940.32/59,920.08 = 20,218.32/x
  3. Step 3: Cross multiply
    39,940.32x = 59,920.08 × 20,218.32
  4. Step 4: Simplify right side
    39,940.32x = 1,211,483,351.87
  5. Step 5: Solve for x
    x = 1,211,483,351.87/39,940.32
  6. Step 6: Final answer
    x = 30,332.34

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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.