Home / 21,002.07-28,981.35-12,049.35

Finding the Fourth Proportional to 21,002.07, 28,981.35 and 12,049.35

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Solution

The fourth proportional to 21,002.07, 28,981.35 and 12,049.35 is: 16,627.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,002.07 : 28,981.35 = 12,049.35 : x
  2. Step 2: Convert to fraction form
    21,002.07/28,981.35 = 12,049.35/x
  3. Step 3: Cross multiply
    21,002.07x = 28,981.35 × 12,049.35
  4. Step 4: Simplify right side
    21,002.07x = 349,206,429.62
  5. Step 5: Solve for x
    x = 349,206,429.62/21,002.07
  6. Step 6: Final answer
    x = 16,627.24

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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.