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Finding the Fourth Proportional to 20,369.56, 30,551.64 and 9,264.28

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Solution

The fourth proportional to 20,369.56, 30,551.64 and 9,264.28 is: 13,895.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,369.56 : 30,551.64 = 9,264.28 : x
  2. Step 2: Convert to fraction form
    20,369.56/30,551.64 = 9,264.28/x
  3. Step 3: Cross multiply
    20,369.56x = 30,551.64 × 9,264.28
  4. Step 4: Simplify right side
    20,369.56x = 283,038,947.42
  5. Step 5: Solve for x
    x = 283,038,947.42/20,369.56
  6. Step 6: Final answer
    x = 13,895.19

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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.