Home / 13,328.22-18,395.19-7,742.46

Finding the Fourth Proportional to 13,328.22, 18,395.19 and 7,742.46

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Solution

The fourth proportional to 13,328.22, 18,395.19 and 7,742.46 is: 10,685.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,328.22 : 18,395.19 = 7,742.46 : x
  2. Step 2: Convert to fraction form
    13,328.22/18,395.19 = 7,742.46/x
  3. Step 3: Cross multiply
    13,328.22x = 18,395.19 × 7,742.46
  4. Step 4: Simplify right side
    13,328.22x = 142,424,022.77
  5. Step 5: Solve for x
    x = 142,424,022.77/13,328.22
  6. Step 6: Final answer
    x = 10,685.90

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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.