Home / 27,997.09-38,635.99-15,421.84

Finding the Fourth Proportional to 27,997.09, 38,635.99 and 15,421.84

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Solution

The fourth proportional to 27,997.09, 38,635.99 and 15,421.84 is: 21,282.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,997.09 : 38,635.99 = 15,421.84 : x
  2. Step 2: Convert to fraction form
    27,997.09/38,635.99 = 15,421.84/x
  3. Step 3: Cross multiply
    27,997.09x = 38,635.99 × 15,421.84
  4. Step 4: Simplify right side
    27,997.09x = 595,838,056.02
  5. Step 5: Solve for x
    x = 595,838,056.02/27,997.09
  6. Step 6: Final answer
    x = 21,282.14

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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.