Home / 31,931.76-47,919.64-11,155.26

Finding the Fourth Proportional to 31,931.76, 47,919.64 and 11,155.26

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Solution

The fourth proportional to 31,931.76, 47,919.64 and 11,155.26 is: 16,740.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,931.76 : 47,919.64 = 11,155.26 : x
  2. Step 2: Convert to fraction form
    31,931.76/47,919.64 = 11,155.26/x
  3. Step 3: Cross multiply
    31,931.76x = 47,919.64 × 11,155.26
  4. Step 4: Simplify right side
    31,931.76x = 534,556,043.31
  5. Step 5: Solve for x
    x = 534,556,043.31/31,931.76
  6. Step 6: Final answer
    x = 16,740.58

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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.