Home / 20,473.31-28,252.83-11,520.80

Finding the Fourth Proportional to 20,473.31, 28,252.83 and 11,520.80

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Solution

The fourth proportional to 20,473.31, 28,252.83 and 11,520.80 is: 15,898.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,473.31 : 28,252.83 = 11,520.80 : x
  2. Step 2: Convert to fraction form
    20,473.31/28,252.83 = 11,520.80/x
  3. Step 3: Cross multiply
    20,473.31x = 28,252.83 × 11,520.80
  4. Step 4: Simplify right side
    20,473.31x = 325,495,274.50
  5. Step 5: Solve for x
    x = 325,495,274.50/20,473.31
  6. Step 6: Final answer
    x = 15,898.52

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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.