Home / 20,233.11-27,921-12,683.51

Finding the Fourth Proportional to 20,233.11, 27,921 and 12,683.51

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Solution

The fourth proportional to 20,233.11, 27,921 and 12,683.51 is: 17,502.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,233.11 : 27,921 = 12,683.51 : x
  2. Step 2: Convert to fraction form
    20,233.11/27,921 = 12,683.51/x
  3. Step 3: Cross multiply
    20,233.11x = 27,921 × 12,683.51
  4. Step 4: Simplify right side
    20,233.11x = 354,136,282.71
  5. Step 5: Solve for x
    x = 354,136,282.71/20,233.11
  6. Step 6: Final answer
    x = 17,502.81

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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.