Home / 20,322.72-28,033.02-12,370.50

Finding the Fourth Proportional to 20,322.72, 28,033.02 and 12,370.50

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Solution

The fourth proportional to 20,322.72, 28,033.02 and 12,370.50 is: 17,063.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,322.72 : 28,033.02 = 12,370.50 : x
  2. Step 2: Convert to fraction form
    20,322.72/28,033.02 = 12,370.50/x
  3. Step 3: Cross multiply
    20,322.72x = 28,033.02 × 12,370.50
  4. Step 4: Simplify right side
    20,322.72x = 346,782,473.91
  5. Step 5: Solve for x
    x = 346,782,473.91/20,322.72
  6. Step 6: Final answer
    x = 17,063.78

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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.