Home / 21,079.92-29,090.28-11,519.94

Finding the Fourth Proportional to 21,079.92, 29,090.28 and 11,519.94

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Solution

The fourth proportional to 21,079.92, 29,090.28 and 11,519.94 is: 15,897.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,079.92 : 29,090.28 = 11,519.94 : x
  2. Step 2: Convert to fraction form
    21,079.92/29,090.28 = 11,519.94/x
  3. Step 3: Cross multiply
    21,079.92x = 29,090.28 × 11,519.94
  4. Step 4: Simplify right side
    21,079.92x = 335,118,280.18
  5. Step 5: Solve for x
    x = 335,118,280.18/21,079.92
  6. Step 6: Final answer
    x = 15,897.51

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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.