Home / 39,807.18-54,933.90-21,901.80

Finding the Fourth Proportional to 39,807.18, 54,933.90 and 21,901.80

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Solution

The fourth proportional to 39,807.18, 54,933.90 and 21,901.80 is: 30,224.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,807.18 : 54,933.90 = 21,901.80 : x
  2. Step 2: Convert to fraction form
    39,807.18/54,933.90 = 21,901.80/x
  3. Step 3: Cross multiply
    39,807.18x = 54,933.90 × 21,901.80
  4. Step 4: Simplify right side
    39,807.18x = 1,203,151,291.02
  5. Step 5: Solve for x
    x = 1,203,151,291.02/39,807.18
  6. Step 6: Final answer
    x = 30,224.48

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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.