Home / 27,808.18-38,382.16-15,878.44

Finding the Fourth Proportional to 27,808.18, 38,382.16 and 15,878.44

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Solution

The fourth proportional to 27,808.18, 38,382.16 and 15,878.44 is: 21,916.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,808.18 : 38,382.16 = 15,878.44 : x
  2. Step 2: Convert to fraction form
    27,808.18/38,382.16 = 15,878.44/x
  3. Step 3: Cross multiply
    27,808.18x = 38,382.16 × 15,878.44
  4. Step 4: Simplify right side
    27,808.18x = 609,448,553.33
  5. Step 5: Solve for x
    x = 609,448,553.33/27,808.18
  6. Step 6: Final answer
    x = 21,916.16

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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.