Home / 21,010.07-31,515.48-6,218.97

Finding the Fourth Proportional to 21,010.07, 31,515.48 and 6,218.97

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Solution

The fourth proportional to 21,010.07, 31,515.48 and 6,218.97 is: 9,328.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,010.07 : 31,515.48 = 6,218.97 : x
  2. Step 2: Convert to fraction form
    21,010.07/31,515.48 = 6,218.97/x
  3. Step 3: Cross multiply
    21,010.07x = 31,515.48 × 6,218.97
  4. Step 4: Simplify right side
    21,010.07x = 195,993,824.66
  5. Step 5: Solve for x
    x = 195,993,824.66/21,010.07
  6. Step 6: Final answer
    x = 9,328.57

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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.