Home / 20,293.32-28,004.70-11,340.80

Finding the Fourth Proportional to 20,293.32, 28,004.70 and 11,340.80

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Solution

The fourth proportional to 20,293.32, 28,004.70 and 11,340.80 is: 15,650.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,293.32 : 28,004.70 = 11,340.80 : x
  2. Step 2: Convert to fraction form
    20,293.32/28,004.70 = 11,340.80/x
  3. Step 3: Cross multiply
    20,293.32x = 28,004.70 × 11,340.80
  4. Step 4: Simplify right side
    20,293.32x = 317,595,701.76
  5. Step 5: Solve for x
    x = 317,595,701.76/20,293.32
  6. Step 6: Final answer
    x = 15,650.26

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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.