Home / 31,899.88-47,855.69-13,190.10

Finding the Fourth Proportional to 31,899.88, 47,855.69 and 13,190.10

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Solution

The fourth proportional to 31,899.88, 47,855.69 and 13,190.10 is: 19,787.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,899.88 : 47,855.69 = 13,190.10 : x
  2. Step 2: Convert to fraction form
    31,899.88/47,855.69 = 13,190.10/x
  3. Step 3: Cross multiply
    31,899.88x = 47,855.69 × 13,190.10
  4. Step 4: Simplify right side
    31,899.88x = 631,221,336.67
  5. Step 5: Solve for x
    x = 631,221,336.67/31,899.88
  6. Step 6: Final answer
    x = 19,787.58

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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.