Home / 31,689.86-43,719.22-18,253.93

Finding the Fourth Proportional to 31,689.86, 43,719.22 and 18,253.93

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Solution

The fourth proportional to 31,689.86, 43,719.22 and 18,253.93 is: 25,183.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,689.86 : 43,719.22 = 18,253.93 : x
  2. Step 2: Convert to fraction form
    31,689.86/43,719.22 = 18,253.93/x
  3. Step 3: Cross multiply
    31,689.86x = 43,719.22 × 18,253.93
  4. Step 4: Simplify right side
    31,689.86x = 798,047,581.53
  5. Step 5: Solve for x
    x = 798,047,581.53/31,689.86
  6. Step 6: Final answer
    x = 25,183.06

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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.