Home / 13,135.19-18,126.02-7,759.37

Finding the Fourth Proportional to 13,135.19, 18,126.02 and 7,759.37

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Solution

The fourth proportional to 13,135.19, 18,126.02 and 7,759.37 is: 10,707.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,135.19 : 18,126.02 = 7,759.37 : x
  2. Step 2: Convert to fraction form
    13,135.19/18,126.02 = 7,759.37/x
  3. Step 3: Cross multiply
    13,135.19x = 18,126.02 × 7,759.37
  4. Step 4: Simplify right side
    13,135.19x = 140,646,366.38
  5. Step 5: Solve for x
    x = 140,646,366.38/13,135.19
  6. Step 6: Final answer
    x = 10,707.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.