Home / 31,827.16-47,683.79-21,265.20

Finding the Fourth Proportional to 31,827.16, 47,683.79 and 21,265.20

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Solution

The fourth proportional to 31,827.16, 47,683.79 and 21,265.20 is: 31,859.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,827.16 : 47,683.79 = 21,265.20 : x
  2. Step 2: Convert to fraction form
    31,827.16/47,683.79 = 21,265.20/x
  3. Step 3: Cross multiply
    31,827.16x = 47,683.79 × 21,265.20
  4. Step 4: Simplify right side
    31,827.16x = 1,014,005,304.53
  5. Step 5: Solve for x
    x = 1,014,005,304.53/31,827.16
  6. Step 6: Final answer
    x = 31,859.75

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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.