Home / 19,275.96-28,921.02-13,772.61

Finding the Fourth Proportional to 19,275.96, 28,921.02 and 13,772.61

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Solution

The fourth proportional to 19,275.96, 28,921.02 and 13,772.61 is: 20,663.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,275.96 : 28,921.02 = 13,772.61 : x
  2. Step 2: Convert to fraction form
    19,275.96/28,921.02 = 13,772.61/x
  3. Step 3: Cross multiply
    19,275.96x = 28,921.02 × 13,772.61
  4. Step 4: Simplify right side
    19,275.96x = 398,317,929.26
  5. Step 5: Solve for x
    x = 398,317,929.26/19,275.96
  6. Step 6: Final answer
    x = 20,663.97

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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.