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Finding the Fourth Proportional to 40,393.86, 60,590.81 and 19,328.95

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Solution

The fourth proportional to 40,393.86, 60,590.81 and 19,328.95 is: 28,993.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,393.86 : 60,590.81 = 19,328.95 : x
  2. Step 2: Convert to fraction form
    40,393.86/60,590.81 = 19,328.95/x
  3. Step 3: Cross multiply
    40,393.86x = 60,590.81 × 19,328.95
  4. Step 4: Simplify right side
    40,393.86x = 1,171,156,736.95
  5. Step 5: Solve for x
    x = 1,171,156,736.95/40,393.86
  6. Step 6: Final answer
    x = 28,993.43

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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.