Home / 31,528.59-43,511.63-18,103.65

Finding the Fourth Proportional to 31,528.59, 43,511.63 and 18,103.65

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Solution

The fourth proportional to 31,528.59, 43,511.63 and 18,103.65 is: 24,984.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,528.59 : 43,511.63 = 18,103.65 : x
  2. Step 2: Convert to fraction form
    31,528.59/43,511.63 = 18,103.65/x
  3. Step 3: Cross multiply
    31,528.59x = 43,511.63 × 18,103.65
  4. Step 4: Simplify right side
    31,528.59x = 787,719,229.93
  5. Step 5: Solve for x
    x = 787,719,229.93/31,528.59
  6. Step 6: Final answer
    x = 24,984.28

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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.