Home / 34,942.40-48,208.80-20,787.20

Finding the Fourth Proportional to 34,942.40, 48,208.80 and 20,787.20

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Solution

The fourth proportional to 34,942.40, 48,208.80 and 20,787.20 is: 28,679.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,942.40 : 48,208.80 = 20,787.20 : x
  2. Step 2: Convert to fraction form
    34,942.40/48,208.80 = 20,787.20/x
  3. Step 3: Cross multiply
    34,942.40x = 48,208.80 × 20,787.20
  4. Step 4: Simplify right side
    34,942.40x = 1,002,125,967.36
  5. Step 5: Solve for x
    x = 1,002,125,967.36/34,942.40
  6. Step 6: Final answer
    x = 28,679.37

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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.