Home / 30,420.29-41,975.85-16,989.83

Finding the Fourth Proportional to 30,420.29, 41,975.85 and 16,989.83

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Solution

The fourth proportional to 30,420.29, 41,975.85 and 16,989.83 is: 23,443.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,420.29 : 41,975.85 = 16,989.83 : x
  2. Step 2: Convert to fraction form
    30,420.29/41,975.85 = 16,989.83/x
  3. Step 3: Cross multiply
    30,420.29x = 41,975.85 × 16,989.83
  4. Step 4: Simplify right side
    30,420.29x = 713,162,555.61
  5. Step 5: Solve for x
    x = 713,162,555.61/30,420.29
  6. Step 6: Final answer
    x = 23,443.65

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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.