Home / 31,637.71-47,357.74-21,116.35

Finding the Fourth Proportional to 31,637.71, 47,357.74 and 21,116.35

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Solution

The fourth proportional to 31,637.71, 47,357.74 and 21,116.35 is: 31,608.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,637.71 : 47,357.74 = 21,116.35 : x
  2. Step 2: Convert to fraction form
    31,637.71/47,357.74 = 21,116.35/x
  3. Step 3: Cross multiply
    31,637.71x = 47,357.74 × 21,116.35
  4. Step 4: Simplify right side
    31,637.71x = 1,000,022,613.05
  5. Step 5: Solve for x
    x = 1,000,022,613.05/31,637.71
  6. Step 6: Final answer
    x = 31,608.57

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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.