Home / 13,411.11-18,507.39-7,442.85

Finding the Fourth Proportional to 13,411.11, 18,507.39 and 7,442.85

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Solution

The fourth proportional to 13,411.11, 18,507.39 and 7,442.85 is: 10,271.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,411.11 : 18,507.39 = 7,442.85 : x
  2. Step 2: Convert to fraction form
    13,411.11/18,507.39 = 7,442.85/x
  3. Step 3: Cross multiply
    13,411.11x = 18,507.39 × 7,442.85
  4. Step 4: Simplify right side
    13,411.11x = 137,747,727.66
  5. Step 5: Solve for x
    x = 137,747,727.66/13,411.11
  6. Step 6: Final answer
    x = 10,271.17

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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.