Home / 22,338.96-30,830.21-12,779.72

Finding the Fourth Proportional to 22,338.96, 30,830.21 and 12,779.72

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Solution

The fourth proportional to 22,338.96, 30,830.21 and 12,779.72 is: 17,637.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,338.96 : 30,830.21 = 12,779.72 : x
  2. Step 2: Convert to fraction form
    22,338.96/30,830.21 = 12,779.72/x
  3. Step 3: Cross multiply
    22,338.96x = 30,830.21 × 12,779.72
  4. Step 4: Simplify right side
    22,338.96x = 394,001,451.34
  5. Step 5: Solve for x
    x = 394,001,451.34/22,338.96
  6. Step 6: Final answer
    x = 17,637.41

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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.