Home / 22,303.92-30,779.85-12,231.78

Finding the Fourth Proportional to 22,303.92, 30,779.85 and 12,231.78

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Solution

The fourth proportional to 22,303.92, 30,779.85 and 12,231.78 is: 16,880.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,303.92 : 30,779.85 = 12,231.78 : x
  2. Step 2: Convert to fraction form
    22,303.92/30,779.85 = 12,231.78/x
  3. Step 3: Cross multiply
    22,303.92x = 30,779.85 × 12,231.78
  4. Step 4: Simplify right side
    22,303.92x = 376,492,353.63
  5. Step 5: Solve for x
    x = 376,492,353.63/22,303.92
  6. Step 6: Final answer
    x = 16,880.10

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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.