Home / 39,877.41-55,030.80-21,972.36

Finding the Fourth Proportional to 39,877.41, 55,030.80 and 21,972.36

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Solution

The fourth proportional to 39,877.41, 55,030.80 and 21,972.36 is: 30,321.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,877.41 : 55,030.80 = 21,972.36 : x
  2. Step 2: Convert to fraction form
    39,877.41/55,030.80 = 21,972.36/x
  3. Step 3: Cross multiply
    39,877.41x = 55,030.80 × 21,972.36
  4. Step 4: Simplify right side
    39,877.41x = 1,209,156,548.69
  5. Step 5: Solve for x
    x = 1,209,156,548.69/39,877.41
  6. Step 6: Final answer
    x = 30,321.84

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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.