Home / 18,678.99-28,029.02-10,357.96

Finding the Fourth Proportional to 18,678.99, 28,029.02 and 10,357.96

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Solution

The fourth proportional to 18,678.99, 28,029.02 and 10,357.96 is: 15,542.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,678.99 : 28,029.02 = 10,357.96 : x
  2. Step 2: Convert to fraction form
    18,678.99/28,029.02 = 10,357.96/x
  3. Step 3: Cross multiply
    18,678.99x = 28,029.02 × 10,357.96
  4. Step 4: Simplify right side
    18,678.99x = 290,323,468.00
  5. Step 5: Solve for x
    x = 290,323,468.00/18,678.99
  6. Step 6: Final answer
    x = 15,542.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.