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Finding the Fourth Proportional to 13,597.79, 20,380.28 and 7,020.39

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Solution

The fourth proportional to 13,597.79, 20,380.28 and 7,020.39 is: 10,522.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,597.79 : 20,380.28 = 7,020.39 : x
  2. Step 2: Convert to fraction form
    13,597.79/20,380.28 = 7,020.39/x
  3. Step 3: Cross multiply
    13,597.79x = 20,380.28 × 7,020.39
  4. Step 4: Simplify right side
    13,597.79x = 143,077,513.91
  5. Step 5: Solve for x
    x = 143,077,513.91/13,597.79
  6. Step 6: Final answer
    x = 10,522.12

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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.