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Finding the Fourth Proportional to 27,809.99, 38,372.02 and 15,877.20

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Solution

The fourth proportional to 27,809.99, 38,372.02 and 15,877.20 is: 21,907.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,809.99 : 38,372.02 = 15,877.20 : x
  2. Step 2: Convert to fraction form
    27,809.99/38,372.02 = 15,877.20/x
  3. Step 3: Cross multiply
    27,809.99x = 38,372.02 × 15,877.20
  4. Step 4: Simplify right side
    27,809.99x = 609,240,235.94
  5. Step 5: Solve for x
    x = 609,240,235.94/27,809.99
  6. Step 6: Final answer
    x = 21,907.24

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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.