Home / 13,937.67-20,900.60-5,615.45

Finding the Fourth Proportional to 13,937.67, 20,900.60 and 5,615.45

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Solution

The fourth proportional to 13,937.67, 20,900.60 and 5,615.45 is: 8,420.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,937.67 : 20,900.60 = 5,615.45 : x
  2. Step 2: Convert to fraction form
    13,937.67/20,900.60 = 5,615.45/x
  3. Step 3: Cross multiply
    13,937.67x = 20,900.60 × 5,615.45
  4. Step 4: Simplify right side
    13,937.67x = 117,366,169.77
  5. Step 5: Solve for x
    x = 117,366,169.77/13,937.67
  6. Step 6: Final answer
    x = 8,420.79

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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.