Home / 28,980.59-39,991.19-16,231.59

Finding the Fourth Proportional to 28,980.59, 39,991.19 and 16,231.59

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Solution

The fourth proportional to 28,980.59, 39,991.19 and 16,231.59 is: 22,398.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,980.59 : 39,991.19 = 16,231.59 : x
  2. Step 2: Convert to fraction form
    28,980.59/39,991.19 = 16,231.59/x
  3. Step 3: Cross multiply
    28,980.59x = 39,991.19 × 16,231.59
  4. Step 4: Simplify right side
    28,980.59x = 649,120,518.53
  5. Step 5: Solve for x
    x = 649,120,518.53/28,980.59
  6. Step 6: Final answer
    x = 22,398.46

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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.