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Finding the Fourth Proportional to 20,425.28, 30,602.16 and 14,551.28

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Solution

The fourth proportional to 20,425.28, 30,602.16 and 14,551.28 is: 21,801.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,425.28 : 30,602.16 = 14,551.28 : x
  2. Step 2: Convert to fraction form
    20,425.28/30,602.16 = 14,551.28/x
  3. Step 3: Cross multiply
    20,425.28x = 30,602.16 × 14,551.28
  4. Step 4: Simplify right side
    20,425.28x = 445,300,598.76
  5. Step 5: Solve for x
    x = 445,300,598.76/20,425.28
  6. Step 6: Final answer
    x = 21,801.44

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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.