Home / 28,216.98-38,929.28-19,732.64

Finding the Fourth Proportional to 28,216.98, 38,929.28 and 19,732.64

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Solution

The fourth proportional to 28,216.98, 38,929.28 and 19,732.64 is: 27,223.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,216.98 : 38,929.28 = 19,732.64 : x
  2. Step 2: Convert to fraction form
    28,216.98/38,929.28 = 19,732.64/x
  3. Step 3: Cross multiply
    28,216.98x = 38,929.28 × 19,732.64
  4. Step 4: Simplify right side
    28,216.98x = 768,177,174.39
  5. Step 5: Solve for x
    x = 768,177,174.39/28,216.98
  6. Step 6: Final answer
    x = 27,223.93

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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.