Home / 30,390.86-41,943.35-16,964.90

Finding the Fourth Proportional to 30,390.86, 41,943.35 and 16,964.90

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Solution

The fourth proportional to 30,390.86, 41,943.35 and 16,964.90 is: 23,413.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,390.86 : 41,943.35 = 16,964.90 : x
  2. Step 2: Convert to fraction form
    30,390.86/41,943.35 = 16,964.90/x
  3. Step 3: Cross multiply
    30,390.86x = 41,943.35 × 16,964.90
  4. Step 4: Simplify right side
    30,390.86x = 711,564,443.87
  5. Step 5: Solve for x
    x = 711,564,443.87/30,390.86
  6. Step 6: Final answer
    x = 23,413.77

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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.