Home / 31,919.81-47,877.91-14,145.35

Finding the Fourth Proportional to 31,919.81, 47,877.91 and 14,145.35

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Solution

The fourth proportional to 31,919.81, 47,877.91 and 14,145.35 is: 21,217.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,919.81 : 47,877.91 = 14,145.35 : x
  2. Step 2: Convert to fraction form
    31,919.81/47,877.91 = 14,145.35/x
  3. Step 3: Cross multiply
    31,919.81x = 47,877.91 × 14,145.35
  4. Step 4: Simplify right side
    31,919.81x = 677,249,519.47
  5. Step 5: Solve for x
    x = 677,249,519.47/31,919.81
  6. Step 6: Final answer
    x = 21,217.22

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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.