Home / 21,471.48-29,683.92-21,274.56

Finding the Fourth Proportional to 21,471.48, 29,683.92 and 21,274.56

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Solution

The fourth proportional to 21,471.48, 29,683.92 and 21,274.56 is: 29,411.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,471.48 : 29,683.92 = 21,274.56 : x
  2. Step 2: Convert to fraction form
    21,471.48/29,683.92 = 21,274.56/x
  3. Step 3: Cross multiply
    21,471.48x = 29,683.92 × 21,274.56
  4. Step 4: Simplify right side
    21,471.48x = 631,512,337.08
  5. Step 5: Solve for x
    x = 631,512,337.08/21,471.48
  6. Step 6: Final answer
    x = 29,411.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.