Home / 13,812.39-20,700.77-5,036.85

Finding the Fourth Proportional to 13,812.39, 20,700.77 and 5,036.85

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Solution

The fourth proportional to 13,812.39, 20,700.77 and 5,036.85 is: 7,548.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,812.39 : 20,700.77 = 5,036.85 : x
  2. Step 2: Convert to fraction form
    13,812.39/20,700.77 = 5,036.85/x
  3. Step 3: Cross multiply
    13,812.39x = 20,700.77 × 5,036.85
  4. Step 4: Simplify right side
    13,812.39x = 104,266,648.19
  5. Step 5: Solve for x
    x = 104,266,648.19/13,812.39
  6. Step 6: Final answer
    x = 7,548.78

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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.