Home / 13,439.12-18,545.83-7,471.31

Finding the Fourth Proportional to 13,439.12, 18,545.83 and 7,471.31

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Solution

The fourth proportional to 13,439.12, 18,545.83 and 7,471.31 is: 10,310.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,439.12 : 18,545.83 = 7,471.31 : x
  2. Step 2: Convert to fraction form
    13,439.12/18,545.83 = 7,471.31/x
  3. Step 3: Cross multiply
    13,439.12x = 18,545.83 × 7,471.31
  4. Step 4: Simplify right side
    13,439.12x = 138,561,533.73
  5. Step 5: Solve for x
    x = 138,561,533.73/13,439.12
  6. Step 6: Final answer
    x = 10,310.32

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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.