Home / 13,610.07-20,420.91-7,040.88

Finding the Fourth Proportional to 13,610.07, 20,420.91 and 7,040.88

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Solution

The fourth proportional to 13,610.07, 20,420.91 and 7,040.88 is: 10,564.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,610.07 : 20,420.91 = 7,040.88 : x
  2. Step 2: Convert to fraction form
    13,610.07/20,420.91 = 7,040.88/x
  3. Step 3: Cross multiply
    13,610.07x = 20,420.91 × 7,040.88
  4. Step 4: Simplify right side
    13,610.07x = 143,781,176.80
  5. Step 5: Solve for x
    x = 143,781,176.80/13,610.07
  6. Step 6: Final answer
    x = 10,564.32

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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.