Home / 19,221.52-28,840.92-10,443.28

Finding the Fourth Proportional to 19,221.52, 28,840.92 and 10,443.28

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Solution

The fourth proportional to 19,221.52, 28,840.92 and 10,443.28 is: 15,669.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,221.52 : 28,840.92 = 10,443.28 : x
  2. Step 2: Convert to fraction form
    19,221.52/28,840.92 = 10,443.28/x
  3. Step 3: Cross multiply
    19,221.52x = 28,840.92 × 10,443.28
  4. Step 4: Simplify right side
    19,221.52x = 301,193,803.02
  5. Step 5: Solve for x
    x = 301,193,803.02/19,221.52
  6. Step 6: Final answer
    x = 15,669.61

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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.