Home / 39,949.83-55,130.76-21,800.61

Finding the Fourth Proportional to 39,949.83, 55,130.76 and 21,800.61

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Solution

The fourth proportional to 39,949.83, 55,130.76 and 21,800.61 is: 30,084.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,949.83 : 55,130.76 = 21,800.61 : x
  2. Step 2: Convert to fraction form
    39,949.83/55,130.76 = 21,800.61/x
  3. Step 3: Cross multiply
    39,949.83x = 55,130.76 × 21,800.61
  4. Step 4: Simplify right side
    39,949.83x = 1,201,884,197.76
  5. Step 5: Solve for x
    x = 1,201,884,197.76/39,949.83
  6. Step 6: Final answer
    x = 30,084.84

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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.