Home / 19,221.02-28,840.17-10,442.78

Finding the Fourth Proportional to 19,221.02, 28,840.17 and 10,442.78

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Solution

The fourth proportional to 19,221.02, 28,840.17 and 10,442.78 is: 15,668.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,221.02 : 28,840.17 = 10,442.78 : x
  2. Step 2: Convert to fraction form
    19,221.02/28,840.17 = 10,442.78/x
  3. Step 3: Cross multiply
    19,221.02x = 28,840.17 × 10,442.78
  4. Step 4: Simplify right side
    19,221.02x = 301,171,550.47
  5. Step 5: Solve for x
    x = 301,171,550.47/19,221.02
  6. Step 6: Final answer
    x = 15,668.86

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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.