Home / 21,142.84-29,176.73-11,582.91

Finding the Fourth Proportional to 21,142.84, 29,176.73 and 11,582.91

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Solution

The fourth proportional to 21,142.84, 29,176.73 and 11,582.91 is: 15,984.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,142.84 : 29,176.73 = 11,582.91 : x
  2. Step 2: Convert to fraction form
    21,142.84/29,176.73 = 11,582.91/x
  3. Step 3: Cross multiply
    21,142.84x = 29,176.73 × 11,582.91
  4. Step 4: Simplify right side
    21,142.84x = 337,951,496.81
  5. Step 5: Solve for x
    x = 337,951,496.81/21,142.84
  6. Step 6: Final answer
    x = 15,984.21

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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.