Home / 22,316.09-30,790.77-12,884.63

Finding the Fourth Proportional to 22,316.09, 30,790.77 and 12,884.63

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Solution

The fourth proportional to 22,316.09, 30,790.77 and 12,884.63 is: 17,777.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,316.09 : 30,790.77 = 12,884.63 : x
  2. Step 2: Convert to fraction form
    22,316.09/30,790.77 = 12,884.63/x
  3. Step 3: Cross multiply
    22,316.09x = 30,790.77 × 12,884.63
  4. Step 4: Simplify right side
    22,316.09x = 396,727,678.87
  5. Step 5: Solve for x
    x = 396,727,678.87/22,316.09
  6. Step 6: Final answer
    x = 17,777.65

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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.