Home / 21,242.18-31,867.53-11,895.49

Finding the Fourth Proportional to 21,242.18, 31,867.53 and 11,895.49

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Solution

The fourth proportional to 21,242.18, 31,867.53 and 11,895.49 is: 17,845.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,242.18 : 31,867.53 = 11,895.49 : x
  2. Step 2: Convert to fraction form
    21,242.18/31,867.53 = 11,895.49/x
  3. Step 3: Cross multiply
    21,242.18x = 31,867.53 × 11,895.49
  4. Step 4: Simplify right side
    21,242.18x = 379,079,879.67
  5. Step 5: Solve for x
    x = 379,079,879.67/21,242.18
  6. Step 6: Final answer
    x = 17,845.62

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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.