Home / 28,781.48-39,719.22-16,206.68

Finding the Fourth Proportional to 28,781.48, 39,719.22 and 16,206.68

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Solution

The fourth proportional to 28,781.48, 39,719.22 and 16,206.68 is: 22,365.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,781.48 : 39,719.22 = 16,206.68 : x
  2. Step 2: Convert to fraction form
    28,781.48/39,719.22 = 16,206.68/x
  3. Step 3: Cross multiply
    28,781.48x = 39,719.22 × 16,206.68
  4. Step 4: Simplify right side
    28,781.48x = 643,716,688.39
  5. Step 5: Solve for x
    x = 643,716,688.39/28,781.48
  6. Step 6: Final answer
    x = 22,365.66

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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.