Home / 31,987.21-47,972.97-14,208.07

Finding the Fourth Proportional to 31,987.21, 47,972.97 and 14,208.07

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Solution

The fourth proportional to 31,987.21, 47,972.97 and 14,208.07 is: 21,308.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,987.21 : 47,972.97 = 14,208.07 : x
  2. Step 2: Convert to fraction form
    31,987.21/47,972.97 = 14,208.07/x
  3. Step 3: Cross multiply
    31,987.21x = 47,972.97 × 14,208.07
  4. Step 4: Simplify right side
    31,987.21x = 681,603,315.87
  5. Step 5: Solve for x
    x = 681,603,315.87/31,987.21
  6. Step 6: Final answer
    x = 21,308.62

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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.