Home / 39,835.68-54,972.78-21,930.32

Finding the Fourth Proportional to 39,835.68, 54,972.78 and 21,930.32

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Solution

The fourth proportional to 39,835.68, 54,972.78 and 21,930.32 is: 30,263.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,835.68 : 54,972.78 = 21,930.32 : x
  2. Step 2: Convert to fraction form
    39,835.68/54,972.78 = 21,930.32/x
  3. Step 3: Cross multiply
    39,835.68x = 54,972.78 × 21,930.32
  4. Step 4: Simplify right side
    39,835.68x = 1,205,570,656.69
  5. Step 5: Solve for x
    x = 1,205,570,656.69/39,835.68
  6. Step 6: Final answer
    x = 30,263.59

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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.