Home / 31,987-47,984.46-10,929.16

Finding the Fourth Proportional to 31,987, 47,984.46 and 10,929.16

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Solution

The fourth proportional to 31,987, 47,984.46 and 10,929.16 is: 16,395.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,987 : 47,984.46 = 10,929.16 : x
  2. Step 2: Convert to fraction form
    31,987/47,984.46 = 10,929.16/x
  3. Step 3: Cross multiply
    31,987x = 47,984.46 × 10,929.16
  4. Step 4: Simplify right side
    31,987x = 524,429,840.85
  5. Step 5: Solve for x
    x = 524,429,840.85/31,987
  6. Step 6: Final answer
    x = 16,395.09

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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.