Home / 31,646.25-47,479.78-12,942.03

Finding the Fourth Proportional to 31,646.25, 47,479.78 and 12,942.03

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Solution

The fourth proportional to 31,646.25, 47,479.78 and 12,942.03 is: 19,417.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,646.25 : 47,479.78 = 12,942.03 : x
  2. Step 2: Convert to fraction form
    31,646.25/47,479.78 = 12,942.03/x
  3. Step 3: Cross multiply
    31,646.25x = 47,479.78 × 12,942.03
  4. Step 4: Simplify right side
    31,646.25x = 614,484,435.04
  5. Step 5: Solve for x
    x = 614,484,435.04/31,646.25
  6. Step 6: Final answer
    x = 19,417.29

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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.