Home / 31,159.77-46,702.40-18,491.78

Finding the Fourth Proportional to 31,159.77, 46,702.40 and 18,491.78

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Solution

The fourth proportional to 31,159.77, 46,702.40 and 18,491.78 is: 27,715.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,159.77 : 46,702.40 = 18,491.78 : x
  2. Step 2: Convert to fraction form
    31,159.77/46,702.40 = 18,491.78/x
  3. Step 3: Cross multiply
    31,159.77x = 46,702.40 × 18,491.78
  4. Step 4: Simplify right side
    31,159.77x = 863,610,180.30
  5. Step 5: Solve for x
    x = 863,610,180.30/31,159.77
  6. Step 6: Final answer
    x = 27,715.55

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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.