Home / 21,008.62-28,992.09-11,577.52

Finding the Fourth Proportional to 21,008.62, 28,992.09 and 11,577.52

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Solution

The fourth proportional to 21,008.62, 28,992.09 and 11,577.52 is: 15,977.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,008.62 : 28,992.09 = 11,577.52 : x
  2. Step 2: Convert to fraction form
    21,008.62/28,992.09 = 11,577.52/x
  3. Step 3: Cross multiply
    21,008.62x = 28,992.09 × 11,577.52
  4. Step 4: Simplify right side
    21,008.62x = 335,656,501.82
  5. Step 5: Solve for x
    x = 335,656,501.82/21,008.62
  6. Step 6: Final answer
    x = 15,977.08

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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.