Home / 15,040.52-20,742.45-9,729.80

Finding the Fourth Proportional to 15,040.52, 20,742.45 and 9,729.80

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Solution

The fourth proportional to 15,040.52, 20,742.45 and 9,729.80 is: 13,418.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,040.52 : 20,742.45 = 9,729.80 : x
  2. Step 2: Convert to fraction form
    15,040.52/20,742.45 = 9,729.80/x
  3. Step 3: Cross multiply
    15,040.52x = 20,742.45 × 9,729.80
  4. Step 4: Simplify right side
    15,040.52x = 201,819,890.01
  5. Step 5: Solve for x
    x = 201,819,890.01/15,040.52
  6. Step 6: Final answer
    x = 13,418.41

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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.