Home / 21,000.44-28,979.24-11,569.01

Finding the Fourth Proportional to 21,000.44, 28,979.24 and 11,569.01

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Solution

The fourth proportional to 21,000.44, 28,979.24 and 11,569.01 is: 15,964.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,000.44 : 28,979.24 = 11,569.01 : x
  2. Step 2: Convert to fraction form
    21,000.44/28,979.24 = 11,569.01/x
  3. Step 3: Cross multiply
    21,000.44x = 28,979.24 × 11,569.01
  4. Step 4: Simplify right side
    21,000.44x = 335,260,914.61
  5. Step 5: Solve for x
    x = 335,260,914.61/21,000.44
  6. Step 6: Final answer
    x = 15,964.47

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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.