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Finding the Fourth Proportional to 22,475.40, 33,680.70 and 9,985.20

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Solution

The fourth proportional to 22,475.40, 33,680.70 and 9,985.20 is: 14,963.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,475.40 : 33,680.70 = 9,985.20 : x
  2. Step 2: Convert to fraction form
    22,475.40/33,680.70 = 9,985.20/x
  3. Step 3: Cross multiply
    22,475.40x = 33,680.70 × 9,985.20
  4. Step 4: Simplify right side
    22,475.40x = 336,308,525.64
  5. Step 5: Solve for x
    x = 336,308,525.64/22,475.40
  6. Step 6: Final answer
    x = 14,963.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.