Home / 20,502.79-28,299.13-13,350.56

Finding the Fourth Proportional to 20,502.79, 28,299.13 and 13,350.56

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Solution

The fourth proportional to 20,502.79, 28,299.13 and 13,350.56 is: 18,427.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,502.79 : 28,299.13 = 13,350.56 : x
  2. Step 2: Convert to fraction form
    20,502.79/28,299.13 = 13,350.56/x
  3. Step 3: Cross multiply
    20,502.79x = 28,299.13 × 13,350.56
  4. Step 4: Simplify right side
    20,502.79x = 377,809,162.26
  5. Step 5: Solve for x
    x = 377,809,162.26/20,502.79
  6. Step 6: Final answer
    x = 18,427.21

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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.