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Finding the Fourth Proportional to 40,658.98, 60,964.50 and 18,996.49

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Solution

The fourth proportional to 40,658.98, 60,964.50 and 18,996.49 is: 28,483.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,658.98 : 60,964.50 = 18,996.49 : x
  2. Step 2: Convert to fraction form
    40,658.98/60,964.50 = 18,996.49/x
  3. Step 3: Cross multiply
    40,658.98x = 60,964.50 × 18,996.49
  4. Step 4: Simplify right side
    40,658.98x = 1,158,111,418.21
  5. Step 5: Solve for x
    x = 1,158,111,418.21/40,658.98
  6. Step 6: Final answer
    x = 28,483.53

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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.