Home / 39,894.60-55,052.34-21,989.58

Finding the Fourth Proportional to 39,894.60, 55,052.34 and 21,989.58

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Solution

The fourth proportional to 39,894.60, 55,052.34 and 21,989.58 is: 30,344.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,894.60 : 55,052.34 = 21,989.58 : x
  2. Step 2: Convert to fraction form
    39,894.60/55,052.34 = 21,989.58/x
  3. Step 3: Cross multiply
    39,894.60x = 55,052.34 × 21,989.58
  4. Step 4: Simplify right side
    39,894.60x = 1,210,577,834.62
  5. Step 5: Solve for x
    x = 1,210,577,834.62/39,894.60
  6. Step 6: Final answer
    x = 30,344.40

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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.