Home / 28,724.99-39,630.80-16,781.54

Finding the Fourth Proportional to 28,724.99, 39,630.80 and 16,781.54

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Solution

The fourth proportional to 28,724.99, 39,630.80 and 16,781.54 is: 23,152.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,724.99 : 39,630.80 = 16,781.54 : x
  2. Step 2: Convert to fraction form
    28,724.99/39,630.80 = 16,781.54/x
  3. Step 3: Cross multiply
    28,724.99x = 39,630.80 × 16,781.54
  4. Step 4: Simplify right side
    28,724.99x = 665,065,699.23
  5. Step 5: Solve for x
    x = 665,065,699.23/28,724.99
  6. Step 6: Final answer
    x = 23,152.86

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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.