Home / 42,658.84-63,972.06-20,458.36

Finding the Fourth Proportional to 42,658.84, 63,972.06 and 20,458.36

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Solution

The fourth proportional to 42,658.84, 63,972.06 and 20,458.36 is: 30,679.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,658.84 : 63,972.06 = 20,458.36 : x
  2. Step 2: Convert to fraction form
    42,658.84/63,972.06 = 20,458.36/x
  3. Step 3: Cross multiply
    42,658.84x = 63,972.06 × 20,458.36
  4. Step 4: Simplify right side
    42,658.84x = 1,308,763,433.42
  5. Step 5: Solve for x
    x = 1,308,763,433.42/42,658.84
  6. Step 6: Final answer
    x = 30,679.77

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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.