Home / 31,121.15-46,681.52-18,644.72

Finding the Fourth Proportional to 31,121.15, 46,681.52 and 18,644.72

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Solution

The fourth proportional to 31,121.15, 46,681.52 and 18,644.72 is: 27,966.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,121.15 : 46,681.52 = 18,644.72 : x
  2. Step 2: Convert to fraction form
    31,121.15/46,681.52 = 18,644.72/x
  3. Step 3: Cross multiply
    31,121.15x = 46,681.52 × 18,644.72
  4. Step 4: Simplify right side
    31,121.15x = 870,363,542.94
  5. Step 5: Solve for x
    x = 870,363,542.94/31,121.15
  6. Step 6: Final answer
    x = 27,966.95

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1.5x scale

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.