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Finding the Fourth Proportional to 34,720.90, 47,914.27 and 18,805.21

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Solution

The fourth proportional to 34,720.90, 47,914.27 and 18,805.21 is: 25,950.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,720.90 : 47,914.27 = 18,805.21 : x
  2. Step 2: Convert to fraction form
    34,720.90/47,914.27 = 18,805.21/x
  3. Step 3: Cross multiply
    34,720.90x = 47,914.27 × 18,805.21
  4. Step 4: Simplify right side
    34,720.90x = 901,037,909.35
  5. Step 5: Solve for x
    x = 901,037,909.35/34,720.90
  6. Step 6: Final answer
    x = 25,950.88

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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.