Home / 20,801.52-28,705.59-11,851.92

Finding the Fourth Proportional to 20,801.52, 28,705.59 and 11,851.92

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Solution

The fourth proportional to 20,801.52, 28,705.59 and 11,851.92 is: 16,355.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,801.52 : 28,705.59 = 11,851.92 : x
  2. Step 2: Convert to fraction form
    20,801.52/28,705.59 = 11,851.92/x
  3. Step 3: Cross multiply
    20,801.52x = 28,705.59 × 11,851.92
  4. Step 4: Simplify right side
    20,801.52x = 340,216,356.23
  5. Step 5: Solve for x
    x = 340,216,356.23/20,801.52
  6. Step 6: Final answer
    x = 16,355.36

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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.