Home / 19,221.44-28,790.40-9,339.92

Finding the Fourth Proportional to 19,221.44, 28,790.40 and 9,339.92

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Solution

The fourth proportional to 19,221.44, 28,790.40 and 9,339.92 is: 13,989.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,221.44 : 28,790.40 = 9,339.92 : x
  2. Step 2: Convert to fraction form
    19,221.44/28,790.40 = 9,339.92/x
  3. Step 3: Cross multiply
    19,221.44x = 28,790.40 × 9,339.92
  4. Step 4: Simplify right side
    19,221.44x = 268,900,032.77
  5. Step 5: Solve for x
    x = 268,900,032.77/19,221.44
  6. Step 6: Final answer
    x = 13,989.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.