Home / 31,987.71-47,973.74-14,208.57

Finding the Fourth Proportional to 31,987.71, 47,973.74 and 14,208.57

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Solution

The fourth proportional to 31,987.71, 47,973.74 and 14,208.57 is: 21,309.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,987.71 : 47,973.74 = 14,208.57 : x
  2. Step 2: Convert to fraction form
    31,987.71/47,973.74 = 14,208.57/x
  3. Step 3: Cross multiply
    31,987.71x = 47,973.74 × 14,208.57
  4. Step 4: Simplify right side
    31,987.71x = 681,638,171.91
  5. Step 5: Solve for x
    x = 681,638,171.91/31,987.71
  6. Step 6: Final answer
    x = 21,309.38

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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.