Home / 21,009.04-28,992.33-11,577.61

Finding the Fourth Proportional to 21,009.04, 28,992.33 and 11,577.61

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Solution

The fourth proportional to 21,009.04, 28,992.33 and 11,577.61 is: 15,977.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,009.04 : 28,992.33 = 11,577.61 : x
  2. Step 2: Convert to fraction form
    21,009.04/28,992.33 = 11,577.61/x
  3. Step 3: Cross multiply
    21,009.04x = 28,992.33 × 11,577.61
  4. Step 4: Simplify right side
    21,009.04x = 335,661,744.77
  5. Step 5: Solve for x
    x = 335,661,744.77/21,009.04
  6. Step 6: Final answer
    x = 15,977.02

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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.