Home / 31,626-47,443.64-12,907.17

Finding the Fourth Proportional to 31,626, 47,443.64 and 12,907.17

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Solution

The fourth proportional to 31,626, 47,443.64 and 12,907.17 is: 19,362.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,626 : 47,443.64 = 12,907.17 : x
  2. Step 2: Convert to fraction form
    31,626/47,443.64 = 12,907.17/x
  3. Step 3: Cross multiply
    31,626x = 47,443.64 × 12,907.17
  4. Step 4: Simplify right side
    31,626x = 612,363,062.36
  5. Step 5: Solve for x
    x = 612,363,062.36/31,626
  6. Step 6: Final answer
    x = 19,362.65

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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.