Home / 31,618.68-47,421.56-11,621.30

Finding the Fourth Proportional to 31,618.68, 47,421.56 and 11,621.30

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Solution

The fourth proportional to 31,618.68, 47,421.56 and 11,621.30 is: 17,429.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,618.68 : 47,421.56 = 11,621.30 : x
  2. Step 2: Convert to fraction form
    31,618.68/47,421.56 = 11,621.30/x
  3. Step 3: Cross multiply
    31,618.68x = 47,421.56 × 11,621.30
  4. Step 4: Simplify right side
    31,618.68x = 551,100,175.23
  5. Step 5: Solve for x
    x = 551,100,175.23/31,618.68
  6. Step 6: Final answer
    x = 17,429.58

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.