Home / 31,528.08-43,516.17-18,106.38

Finding the Fourth Proportional to 31,528.08, 43,516.17 and 18,106.38

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Solution

The fourth proportional to 31,528.08, 43,516.17 and 18,106.38 is: 24,991.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,528.08 : 43,516.17 = 18,106.38 : x
  2. Step 2: Convert to fraction form
    31,528.08/43,516.17 = 18,106.38/x
  3. Step 3: Cross multiply
    31,528.08x = 43,516.17 × 18,106.38
  4. Step 4: Simplify right side
    31,528.08x = 787,920,310.16
  5. Step 5: Solve for x
    x = 787,920,310.16/31,528.08
  6. Step 6: Final answer
    x = 24,991.07

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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.