Home / 20,925.02-28,895.28-15,610.61

Finding the Fourth Proportional to 20,925.02, 28,895.28 and 15,610.61

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Solution

The fourth proportional to 20,925.02, 28,895.28 and 15,610.61 is: 21,556.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,925.02 : 28,895.28 = 15,610.61 : x
  2. Step 2: Convert to fraction form
    20,925.02/28,895.28 = 15,610.61/x
  3. Step 3: Cross multiply
    20,925.02x = 28,895.28 × 15,610.61
  4. Step 4: Simplify right side
    20,925.02x = 451,072,946.92
  5. Step 5: Solve for x
    x = 451,072,946.92/20,925.02
  6. Step 6: Final answer
    x = 21,556.63

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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.