Home / 16,420.72-22,660.28-9,346.98

Finding the Fourth Proportional to 16,420.72, 22,660.28 and 9,346.98

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Solution

The fourth proportional to 16,420.72, 22,660.28 and 9,346.98 is: 12,898.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,420.72 : 22,660.28 = 9,346.98 : x
  2. Step 2: Convert to fraction form
    16,420.72/22,660.28 = 9,346.98/x
  3. Step 3: Cross multiply
    16,420.72x = 22,660.28 × 9,346.98
  4. Step 4: Simplify right side
    16,420.72x = 211,805,183.95
  5. Step 5: Solve for x
    x = 211,805,183.95/16,420.72
  6. Step 6: Final answer
    x = 12,898.65

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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.