Home / 21,014.29-28,997.76-11,582.79

Finding the Fourth Proportional to 21,014.29, 28,997.76 and 11,582.79

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Solution

The fourth proportional to 21,014.29, 28,997.76 and 11,582.79 is: 15,983.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,014.29 : 28,997.76 = 11,582.79 : x
  2. Step 2: Convert to fraction form
    21,014.29/28,997.76 = 11,582.79/x
  3. Step 3: Cross multiply
    21,014.29x = 28,997.76 × 11,582.79
  4. Step 4: Simplify right side
    21,014.29x = 335,874,964.55
  5. Step 5: Solve for x
    x = 335,874,964.55/21,014.29
  6. Step 6: Final answer
    x = 15,983.17

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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.