Home / 12,534.36-18,791.80-5,140.68

Finding the Fourth Proportional to 12,534.36, 18,791.80 and 5,140.68

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Solution

The fourth proportional to 12,534.36, 18,791.80 and 5,140.68 is: 7,707.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,534.36 : 18,791.80 = 5,140.68 : x
  2. Step 2: Convert to fraction form
    12,534.36/18,791.80 = 5,140.68/x
  3. Step 3: Cross multiply
    12,534.36x = 18,791.80 × 5,140.68
  4. Step 4: Simplify right side
    12,534.36x = 96,602,630.42
  5. Step 5: Solve for x
    x = 96,602,630.42/12,534.36
  6. Step 6: Final answer
    x = 7,707.03

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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.