Home / 20,020.12-27,628.55-13,294.15

Finding the Fourth Proportional to 20,020.12, 27,628.55 and 13,294.15

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Solution

The fourth proportional to 20,020.12, 27,628.55 and 13,294.15 is: 18,346.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,020.12 : 27,628.55 = 13,294.15 : x
  2. Step 2: Convert to fraction form
    20,020.12/27,628.55 = 13,294.15/x
  3. Step 3: Cross multiply
    20,020.12x = 27,628.55 × 13,294.15
  4. Step 4: Simplify right side
    20,020.12x = 367,298,087.98
  5. Step 5: Solve for x
    x = 367,298,087.98/20,020.12
  6. Step 6: Final answer
    x = 18,346.45

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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.