Home / 21,088.80-29,101.65-11,528.52

Finding the Fourth Proportional to 21,088.80, 29,101.65 and 11,528.52

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Solution

The fourth proportional to 21,088.80, 29,101.65 and 11,528.52 is: 15,908.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,088.80 : 29,101.65 = 11,528.52 : x
  2. Step 2: Convert to fraction form
    21,088.80/29,101.65 = 11,528.52/x
  3. Step 3: Cross multiply
    21,088.80x = 29,101.65 × 11,528.52
  4. Step 4: Simplify right side
    21,088.80x = 335,498,954.06
  5. Step 5: Solve for x
    x = 335,498,954.06/21,088.80
  6. Step 6: Final answer
    x = 15,908.87

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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.