Home / 20,602.98-28,432.08-11,171.52

Finding the Fourth Proportional to 20,602.98, 28,432.08 and 11,171.52

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Solution

The fourth proportional to 20,602.98, 28,432.08 and 11,171.52 is: 15,416.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,602.98 : 28,432.08 = 11,171.52 : x
  2. Step 2: Convert to fraction form
    20,602.98/28,432.08 = 11,171.52/x
  3. Step 3: Cross multiply
    20,602.98x = 28,432.08 × 11,171.52
  4. Step 4: Simplify right side
    20,602.98x = 317,629,550.36
  5. Step 5: Solve for x
    x = 317,629,550.36/20,602.98
  6. Step 6: Final answer
    x = 15,416.68

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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.