Home / 39,877.20-55,029.78-21,973.86

Finding the Fourth Proportional to 39,877.20, 55,029.78 and 21,973.86

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Solution

The fourth proportional to 39,877.20, 55,029.78 and 21,973.86 is: 30,323.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,877.20 : 55,029.78 = 21,973.86 : x
  2. Step 2: Convert to fraction form
    39,877.20/55,029.78 = 21,973.86/x
  3. Step 3: Cross multiply
    39,877.20x = 55,029.78 × 21,973.86
  4. Step 4: Simplify right side
    39,877.20x = 1,209,216,681.55
  5. Step 5: Solve for x
    x = 1,209,216,681.55/39,877.20
  6. Step 6: Final answer
    x = 30,323.51

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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.