Home / 13,613.81-20,415.44-5,292.70

Finding the Fourth Proportional to 13,613.81, 20,415.44 and 5,292.70

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Solution

The fourth proportional to 13,613.81, 20,415.44 and 5,292.70 is: 7,937.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,613.81 : 20,415.44 = 5,292.70 : x
  2. Step 2: Convert to fraction form
    13,613.81/20,415.44 = 5,292.70/x
  3. Step 3: Cross multiply
    13,613.81x = 20,415.44 × 5,292.70
  4. Step 4: Simplify right side
    13,613.81x = 108,052,761.48
  5. Step 5: Solve for x
    x = 108,052,761.48/13,613.81
  6. Step 6: Final answer
    x = 7,937.00

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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.