Home / 31,487.39-43,461.53-20,740.11

Finding the Fourth Proportional to 31,487.39, 43,461.53 and 20,740.11

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Solution

The fourth proportional to 31,487.39, 43,461.53 and 20,740.11 is: 28,627.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,487.39 : 43,461.53 = 20,740.11 : x
  2. Step 2: Convert to fraction form
    31,487.39/43,461.53 = 20,740.11/x
  3. Step 3: Cross multiply
    31,487.39x = 43,461.53 × 20,740.11
  4. Step 4: Simplify right side
    31,487.39x = 901,396,732.75
  5. Step 5: Solve for x
    x = 901,396,732.75/31,487.39
  6. Step 6: Final answer
    x = 28,627.23

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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.