Home / 13,158.26-18,159.47-7,494.78

Finding the Fourth Proportional to 13,158.26, 18,159.47 and 7,494.78

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Solution

The fourth proportional to 13,158.26, 18,159.47 and 7,494.78 is: 10,343.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,158.26 : 18,159.47 = 7,494.78 : x
  2. Step 2: Convert to fraction form
    13,158.26/18,159.47 = 7,494.78/x
  3. Step 3: Cross multiply
    13,158.26x = 18,159.47 × 7,494.78
  4. Step 4: Simplify right side
    13,158.26x = 136,101,232.57
  5. Step 5: Solve for x
    x = 136,101,232.57/13,158.26
  6. Step 6: Final answer
    x = 10,343.41

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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.