Home / 39,899.28-55,061.39-21,994.93

Finding the Fourth Proportional to 39,899.28, 55,061.39 and 21,994.93

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Solution

The fourth proportional to 39,899.28, 55,061.39 and 21,994.93 is: 30,353.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,899.28 : 55,061.39 = 21,994.93 : x
  2. Step 2: Convert to fraction form
    39,899.28/55,061.39 = 21,994.93/x
  3. Step 3: Cross multiply
    39,899.28x = 55,061.39 × 21,994.93
  4. Step 4: Simplify right side
    39,899.28x = 1,211,071,418.75
  5. Step 5: Solve for x
    x = 1,211,071,418.75/39,899.28
  6. Step 6: Final answer
    x = 30,353.21

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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.