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Finding the Fourth Proportional to 28,043.50, 38,700.03 and 15,469.06

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Solution

The fourth proportional to 28,043.50, 38,700.03 and 15,469.06 is: 21,347.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,043.50 : 38,700.03 = 15,469.06 : x
  2. Step 2: Convert to fraction form
    28,043.50/38,700.03 = 15,469.06/x
  3. Step 3: Cross multiply
    28,043.50x = 38,700.03 × 15,469.06
  4. Step 4: Simplify right side
    28,043.50x = 598,653,086.07
  5. Step 5: Solve for x
    x = 598,653,086.07/28,043.50
  6. Step 6: Final answer
    x = 21,347.30

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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.