Home / 13,403.59-18,490.89-8,369.07

Finding the Fourth Proportional to 13,403.59, 18,490.89 and 8,369.07

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Solution

The fourth proportional to 13,403.59, 18,490.89 and 8,369.07 is: 11,545.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,403.59 : 18,490.89 = 8,369.07 : x
  2. Step 2: Convert to fraction form
    13,403.59/18,490.89 = 8,369.07/x
  3. Step 3: Cross multiply
    13,403.59x = 18,490.89 × 8,369.07
  4. Step 4: Simplify right side
    13,403.59x = 154,751,552.77
  5. Step 5: Solve for x
    x = 154,751,552.77/13,403.59
  6. Step 6: Final answer
    x = 11,545.53

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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.