Home / 31,989.21-47,963.28-13,282.16

Finding the Fourth Proportional to 31,989.21, 47,963.28 and 13,282.16

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Solution

The fourth proportional to 31,989.21, 47,963.28 and 13,282.16 is: 19,914.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,989.21 : 47,963.28 = 13,282.16 : x
  2. Step 2: Convert to fraction form
    31,989.21/47,963.28 = 13,282.16/x
  3. Step 3: Cross multiply
    31,989.21x = 47,963.28 × 13,282.16
  4. Step 4: Simplify right side
    31,989.21x = 637,055,959.08
  5. Step 5: Solve for x
    x = 637,055,959.08/31,989.21
  6. Step 6: Final answer
    x = 19,914.71

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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.