Home / 20,984.86-28,896.61-20,519.18

Finding the Fourth Proportional to 20,984.86, 28,896.61 and 20,519.18

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Solution

The fourth proportional to 20,984.86, 28,896.61 and 20,519.18 is: 28,255.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,984.86 : 28,896.61 = 20,519.18 : x
  2. Step 2: Convert to fraction form
    20,984.86/28,896.61 = 20,519.18/x
  3. Step 3: Cross multiply
    20,984.86x = 28,896.61 × 20,519.18
  4. Step 4: Simplify right side
    20,984.86x = 592,934,741.98
  5. Step 5: Solve for x
    x = 592,934,741.98/20,984.86
  6. Step 6: Final answer
    x = 28,255.36

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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.