Home / 31,678.10-43,715.22-18,249.32

Finding the Fourth Proportional to 31,678.10, 43,715.22 and 18,249.32

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Solution

The fourth proportional to 31,678.10, 43,715.22 and 18,249.32 is: 25,183.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,678.10 : 43,715.22 = 18,249.32 : x
  2. Step 2: Convert to fraction form
    31,678.10/43,715.22 = 18,249.32/x
  3. Step 3: Cross multiply
    31,678.10x = 43,715.22 × 18,249.32
  4. Step 4: Simplify right side
    31,678.10x = 797,773,038.65
  5. Step 5: Solve for x
    x = 797,773,038.65/31,678.10
  6. Step 6: Final answer
    x = 25,183.74

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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.