Home / 27,872.10-38,457.18-15,933.51

Finding the Fourth Proportional to 27,872.10, 38,457.18 and 15,933.51

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Solution

The fourth proportional to 27,872.10, 38,457.18 and 15,933.51 is: 21,984.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,872.10 : 38,457.18 = 15,933.51 : x
  2. Step 2: Convert to fraction form
    27,872.10/38,457.18 = 15,933.51/x
  3. Step 3: Cross multiply
    27,872.10x = 38,457.18 × 15,933.51
  4. Step 4: Simplify right side
    27,872.10x = 612,757,862.10
  5. Step 5: Solve for x
    x = 612,757,862.10/27,872.10
  6. Step 6: Final answer
    x = 21,984.63

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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.