Home / 28,739.68-39,654.81-16,800.70

Finding the Fourth Proportional to 28,739.68, 39,654.81 and 16,800.70

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Solution

The fourth proportional to 28,739.68, 39,654.81 and 16,800.70 is: 23,181.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,739.68 : 39,654.81 = 16,800.70 : x
  2. Step 2: Convert to fraction form
    28,739.68/39,654.81 = 16,800.70/x
  3. Step 3: Cross multiply
    28,739.68x = 39,654.81 × 16,800.70
  4. Step 4: Simplify right side
    28,739.68x = 666,228,566.37
  5. Step 5: Solve for x
    x = 666,228,566.37/28,739.68
  6. Step 6: Final answer
    x = 23,181.49

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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.