Home / 21,117.43-31,683.39-7,973.56

Finding the Fourth Proportional to 21,117.43, 31,683.39 and 7,973.56

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Solution

The fourth proportional to 21,117.43, 31,683.39 and 7,973.56 is: 11,963.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,117.43 : 31,683.39 = 7,973.56 : x
  2. Step 2: Convert to fraction form
    21,117.43/31,683.39 = 7,973.56/x
  3. Step 3: Cross multiply
    21,117.43x = 31,683.39 × 7,973.56
  4. Step 4: Simplify right side
    21,117.43x = 252,629,411.17
  5. Step 5: Solve for x
    x = 252,629,411.17/21,117.43
  6. Step 6: Final answer
    x = 11,963.08

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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.