Home / 13,285.75-18,333.99-7,317.36

Finding the Fourth Proportional to 13,285.75, 18,333.99 and 7,317.36

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Solution

The fourth proportional to 13,285.75, 18,333.99 and 7,317.36 is: 10,097.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,285.75 : 18,333.99 = 7,317.36 : x
  2. Step 2: Convert to fraction form
    13,285.75/18,333.99 = 7,317.36/x
  3. Step 3: Cross multiply
    13,285.75x = 18,333.99 × 7,317.36
  4. Step 4: Simplify right side
    13,285.75x = 134,156,405.07
  5. Step 5: Solve for x
    x = 134,156,405.07/13,285.75
  6. Step 6: Final answer
    x = 10,097.77

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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.