Home / 22,140-30,555.12-12,205.92

Finding the Fourth Proportional to 22,140, 30,555.12 and 12,205.92

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Solution

The fourth proportional to 22,140, 30,555.12 and 12,205.92 is: 16,845.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,140 : 30,555.12 = 12,205.92 : x
  2. Step 2: Convert to fraction form
    22,140/30,555.12 = 12,205.92/x
  3. Step 3: Cross multiply
    22,140x = 30,555.12 × 12,205.92
  4. Step 4: Simplify right side
    22,140x = 372,953,350.31
  5. Step 5: Solve for x
    x = 372,953,350.31/22,140
  6. Step 6: Final answer
    x = 16,845.23

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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.