Home / 20,901.24-28,841.62-12,940.52

Finding the Fourth Proportional to 20,901.24, 28,841.62 and 12,940.52

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Solution

The fourth proportional to 20,901.24, 28,841.62 and 12,940.52 is: 17,856.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,901.24 : 28,841.62 = 12,940.52 : x
  2. Step 2: Convert to fraction form
    20,901.24/28,841.62 = 12,940.52/x
  3. Step 3: Cross multiply
    20,901.24x = 28,841.62 × 12,940.52
  4. Step 4: Simplify right side
    20,901.24x = 373,225,560.44
  5. Step 5: Solve for x
    x = 373,225,560.44/20,901.24
  6. Step 6: Final answer
    x = 17,856.62

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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.