Home / 25,178.80-37,768.20-20,801.20

Finding the Fourth Proportional to 25,178.80, 37,768.20 and 20,801.20

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Solution

The fourth proportional to 25,178.80, 37,768.20 and 20,801.20 is: 31,201.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,178.80 : 37,768.20 = 20,801.20 : x
  2. Step 2: Convert to fraction form
    25,178.80/37,768.20 = 20,801.20/x
  3. Step 3: Cross multiply
    25,178.80x = 37,768.20 × 20,801.20
  4. Step 4: Simplify right side
    25,178.80x = 785,623,881.84
  5. Step 5: Solve for x
    x = 785,623,881.84/25,178.80
  6. Step 6: Final answer
    x = 31,201.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.