Home / 21,331.15-31,997.33-6,541.56

Finding the Fourth Proportional to 21,331.15, 31,997.33 and 6,541.56

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Solution

The fourth proportional to 21,331.15, 31,997.33 and 6,541.56 is: 9,812.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,331.15 : 31,997.33 = 6,541.56 : x
  2. Step 2: Convert to fraction form
    21,331.15/31,997.33 = 6,541.56/x
  3. Step 3: Cross multiply
    21,331.15x = 31,997.33 × 6,541.56
  4. Step 4: Simplify right side
    21,331.15x = 209,312,445.86
  5. Step 5: Solve for x
    x = 209,312,445.86/21,331.15
  6. Step 6: Final answer
    x = 9,812.53

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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.