Home / 21,997.07-30,315.22-15,623.93

Finding the Fourth Proportional to 21,997.07, 30,315.22 and 15,623.93

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Solution

The fourth proportional to 21,997.07, 30,315.22 and 15,623.93 is: 21,532.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,997.07 : 30,315.22 = 15,623.93 : x
  2. Step 2: Convert to fraction form
    21,997.07/30,315.22 = 15,623.93/x
  3. Step 3: Cross multiply
    21,997.07x = 30,315.22 × 15,623.93
  4. Step 4: Simplify right side
    21,997.07x = 473,642,875.21
  5. Step 5: Solve for x
    x = 473,642,875.21/21,997.07
  6. Step 6: Final answer
    x = 21,532.09

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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.