Home / 21,273.72-31,880.34-15,683.10

Finding the Fourth Proportional to 21,273.72, 31,880.34 and 15,683.10

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Solution

The fourth proportional to 21,273.72, 31,880.34 and 15,683.10 is: 23,502.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,273.72 : 31,880.34 = 15,683.10 : x
  2. Step 2: Convert to fraction form
    21,273.72/31,880.34 = 15,683.10/x
  3. Step 3: Cross multiply
    21,273.72x = 31,880.34 × 15,683.10
  4. Step 4: Simplify right side
    21,273.72x = 499,982,560.25
  5. Step 5: Solve for x
    x = 499,982,560.25/21,273.72
  6. Step 6: Final answer
    x = 23,502.36

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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.