Home / 21,001.97-28,983.32-12,051.07

Finding the Fourth Proportional to 21,001.97, 28,983.32 and 12,051.07

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Solution

The fourth proportional to 21,001.97, 28,983.32 and 12,051.07 is: 16,630.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,001.97 : 28,983.32 = 12,051.07 : x
  2. Step 2: Convert to fraction form
    21,001.97/28,983.32 = 12,051.07/x
  3. Step 3: Cross multiply
    21,001.97x = 28,983.32 × 12,051.07
  4. Step 4: Simplify right side
    21,001.97x = 349,279,930.63
  5. Step 5: Solve for x
    x = 349,279,930.63/21,001.97
  6. Step 6: Final answer
    x = 16,630.82

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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.