Home / 39,904.28-55,068.27-21,999.92

Finding the Fourth Proportional to 39,904.28, 55,068.27 and 21,999.92

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Solution

The fourth proportional to 39,904.28, 55,068.27 and 21,999.92 is: 30,360.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,904.28 : 55,068.27 = 21,999.92 : x
  2. Step 2: Convert to fraction form
    39,904.28/55,068.27 = 21,999.92/x
  3. Step 3: Cross multiply
    39,904.28x = 55,068.27 × 21,999.92
  4. Step 4: Simplify right side
    39,904.28x = 1,211,497,672.21
  5. Step 5: Solve for x
    x = 1,211,497,672.21/39,904.28
  6. Step 6: Final answer
    x = 30,360.09

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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.