Home / 22,558.38-31,130.12-12,486.82

Finding the Fourth Proportional to 22,558.38, 31,130.12 and 12,486.82

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Solution

The fourth proportional to 22,558.38, 31,130.12 and 12,486.82 is: 17,231.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,558.38 : 31,130.12 = 12,486.82 : x
  2. Step 2: Convert to fraction form
    22,558.38/31,130.12 = 12,486.82/x
  3. Step 3: Cross multiply
    22,558.38x = 31,130.12 × 12,486.82
  4. Step 4: Simplify right side
    22,558.38x = 388,716,205.02
  5. Step 5: Solve for x
    x = 388,716,205.02/22,558.38
  6. Step 6: Final answer
    x = 17,231.57

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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.