Home / 13,538.68-20,298.74-7,214.49

Finding the Fourth Proportional to 13,538.68, 20,298.74 and 7,214.49

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Solution

The fourth proportional to 13,538.68, 20,298.74 and 7,214.49 is: 10,816.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,538.68 : 20,298.74 = 7,214.49 : x
  2. Step 2: Convert to fraction form
    13,538.68/20,298.74 = 7,214.49/x
  3. Step 3: Cross multiply
    13,538.68x = 20,298.74 × 7,214.49
  4. Step 4: Simplify right side
    13,538.68x = 146,445,020.67
  5. Step 5: Solve for x
    x = 146,445,020.67/13,538.68
  6. Step 6: Final answer
    x = 10,816.79

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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.