Home / 28,040.40-38,696.22-15,293.66

Finding the Fourth Proportional to 28,040.40, 38,696.22 and 15,293.66

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Solution

The fourth proportional to 28,040.40, 38,696.22 and 15,293.66 is: 21,105.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,040.40 : 38,696.22 = 15,293.66 : x
  2. Step 2: Convert to fraction form
    28,040.40/38,696.22 = 15,293.66/x
  3. Step 3: Cross multiply
    28,040.40x = 38,696.22 × 15,293.66
  4. Step 4: Simplify right side
    28,040.40x = 591,806,638.48
  5. Step 5: Solve for x
    x = 591,806,638.48/28,040.40
  6. Step 6: Final answer
    x = 21,105.50

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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.