Home / 21,006.52-28,988.76-12,054.22

Finding the Fourth Proportional to 21,006.52, 28,988.76 and 12,054.22

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Solution

The fourth proportional to 21,006.52, 28,988.76 and 12,054.22 is: 16,634.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,006.52 : 28,988.76 = 12,054.22 : x
  2. Step 2: Convert to fraction form
    21,006.52/28,988.76 = 12,054.22/x
  3. Step 3: Cross multiply
    21,006.52x = 28,988.76 × 12,054.22
  4. Step 4: Simplify right side
    21,006.52x = 349,436,890.57
  5. Step 5: Solve for x
    x = 349,436,890.57/21,006.52
  6. Step 6: Final answer
    x = 16,634.69

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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.