Home / 13,411.10-18,508.68-7,442.81

Finding the Fourth Proportional to 13,411.10, 18,508.68 and 7,442.81

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Solution

The fourth proportional to 13,411.10, 18,508.68 and 7,442.81 is: 10,271.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,411.10 : 18,508.68 = 7,442.81 : x
  2. Step 2: Convert to fraction form
    13,411.10/18,508.68 = 7,442.81/x
  3. Step 3: Cross multiply
    13,411.10x = 18,508.68 × 7,442.81
  4. Step 4: Simplify right side
    13,411.10x = 137,756,496.05
  5. Step 5: Solve for x
    x = 137,756,496.05/13,411.10
  6. Step 6: Final answer
    x = 10,271.83

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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.