Home / 21,288.65-31,908.34-10,051.12

Finding the Fourth Proportional to 21,288.65, 31,908.34 and 10,051.12

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Solution

The fourth proportional to 21,288.65, 31,908.34 and 10,051.12 is: 15,065.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,288.65 : 31,908.34 = 10,051.12 : x
  2. Step 2: Convert to fraction form
    21,288.65/31,908.34 = 10,051.12/x
  3. Step 3: Cross multiply
    21,288.65x = 31,908.34 × 10,051.12
  4. Step 4: Simplify right side
    21,288.65x = 320,714,344.54
  5. Step 5: Solve for x
    x = 320,714,344.54/21,288.65
  6. Step 6: Final answer
    x = 15,065.04

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.