Home / 13,285.86-18,333.84-7,317.78

Finding the Fourth Proportional to 13,285.86, 18,333.84 and 7,317.78

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Solution

The fourth proportional to 13,285.86, 18,333.84 and 7,317.78 is: 10,098.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,285.86 : 18,333.84 = 7,317.78 : x
  2. Step 2: Convert to fraction form
    13,285.86/18,333.84 = 7,317.78/x
  3. Step 3: Cross multiply
    13,285.86x = 18,333.84 × 7,317.78
  4. Step 4: Simplify right side
    13,285.86x = 134,163,007.68
  5. Step 5: Solve for x
    x = 134,163,007.68/13,285.86
  6. Step 6: Final answer
    x = 10,098.18

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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.