Home / 27,478.15-37,878.51-21,499.44

Finding the Fourth Proportional to 27,478.15, 37,878.51 and 21,499.44

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Solution

The fourth proportional to 27,478.15, 37,878.51 and 21,499.44 is: 29,636.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,478.15 : 37,878.51 = 21,499.44 : x
  2. Step 2: Convert to fraction form
    27,478.15/37,878.51 = 21,499.44/x
  3. Step 3: Cross multiply
    27,478.15x = 37,878.51 × 21,499.44
  4. Step 4: Simplify right side
    27,478.15x = 814,366,753.03
  5. Step 5: Solve for x
    x = 814,366,753.03/27,478.15
  6. Step 6: Final answer
    x = 29,636.88

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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.