Home / 39,117.94-53,982.18-21,212.55

Finding the Fourth Proportional to 39,117.94, 53,982.18 and 21,212.55

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Solution

The fourth proportional to 39,117.94, 53,982.18 and 21,212.55 is: 29,273.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,117.94 : 53,982.18 = 21,212.55 : x
  2. Step 2: Convert to fraction form
    39,117.94/53,982.18 = 21,212.55/x
  3. Step 3: Cross multiply
    39,117.94x = 53,982.18 × 21,212.55
  4. Step 4: Simplify right side
    39,117.94x = 1,145,099,692.36
  5. Step 5: Solve for x
    x = 1,145,099,692.36/39,117.94
  6. Step 6: Final answer
    x = 29,273.01

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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.