Home / 21,006.39-28,987.52-12,054.63

Finding the Fourth Proportional to 21,006.39, 28,987.52 and 12,054.63

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Solution

The fourth proportional to 21,006.39, 28,987.52 and 12,054.63 is: 16,634.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,006.39 : 28,987.52 = 12,054.63 : x
  2. Step 2: Convert to fraction form
    21,006.39/28,987.52 = 12,054.63/x
  3. Step 3: Cross multiply
    21,006.39x = 28,987.52 × 12,054.63
  4. Step 4: Simplify right side
    21,006.39x = 349,433,767.94
  5. Step 5: Solve for x
    x = 349,433,767.94/21,006.39
  6. Step 6: Final answer
    x = 16,634.64

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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.