Home / 20,502.07-28,297.46-13,424.38

Finding the Fourth Proportional to 20,502.07, 28,297.46 and 13,424.38

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Solution

The fourth proportional to 20,502.07, 28,297.46 and 13,424.38 is: 18,528.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,502.07 : 28,297.46 = 13,424.38 : x
  2. Step 2: Convert to fraction form
    20,502.07/28,297.46 = 13,424.38/x
  3. Step 3: Cross multiply
    20,502.07x = 28,297.46 × 13,424.38
  4. Step 4: Simplify right side
    20,502.07x = 379,875,856.07
  5. Step 5: Solve for x
    x = 379,875,856.07/20,502.07
  6. Step 6: Final answer
    x = 18,528.66

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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.