Home / 39,300.28-54,232.70-21,395.36

Finding the Fourth Proportional to 39,300.28, 54,232.70 and 21,395.36

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Solution

The fourth proportional to 39,300.28, 54,232.70 and 21,395.36 is: 29,524.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,300.28 : 54,232.70 = 21,395.36 : x
  2. Step 2: Convert to fraction form
    39,300.28/54,232.70 = 21,395.36/x
  3. Step 3: Cross multiply
    39,300.28x = 54,232.70 × 21,395.36
  4. Step 4: Simplify right side
    39,300.28x = 1,160,328,168.88
  5. Step 5: Solve for x
    x = 1,160,328,168.88/39,300.28
  6. Step 6: Final answer
    x = 29,524.68

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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.