Home / 22,339.10-30,830.41-12,779.87

Finding the Fourth Proportional to 22,339.10, 30,830.41 and 12,779.87

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Solution

The fourth proportional to 22,339.10, 30,830.41 and 12,779.87 is: 17,637.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,339.10 : 30,830.41 = 12,779.87 : x
  2. Step 2: Convert to fraction form
    22,339.10/30,830.41 = 12,779.87/x
  3. Step 3: Cross multiply
    22,339.10x = 30,830.41 × 12,779.87
  4. Step 4: Simplify right side
    22,339.10x = 394,008,631.85
  5. Step 5: Solve for x
    x = 394,008,631.85/22,339.10
  6. Step 6: Final answer
    x = 17,637.62

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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.