Home / 31,621.62-47,456.91-11,918.10

Finding the Fourth Proportional to 31,621.62, 47,456.91 and 11,918.10

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Solution

The fourth proportional to 31,621.62, 47,456.91 and 11,918.10 is: 17,886.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,621.62 : 47,456.91 = 11,918.10 : x
  2. Step 2: Convert to fraction form
    31,621.62/47,456.91 = 11,918.10/x
  3. Step 3: Cross multiply
    31,621.62x = 47,456.91 × 11,918.10
  4. Step 4: Simplify right side
    31,621.62x = 565,596,199.07
  5. Step 5: Solve for x
    x = 565,596,199.07/31,621.62
  6. Step 6: Final answer
    x = 17,886.38

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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.