Home / 13,285.20-18,333.48-7,316.88

Finding the Fourth Proportional to 13,285.20, 18,333.48 and 7,316.88

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Solution

The fourth proportional to 13,285.20, 18,333.48 and 7,316.88 is: 10,097.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,285.20 : 18,333.48 = 7,316.88 : x
  2. Step 2: Convert to fraction form
    13,285.20/18,333.48 = 7,316.88/x
  3. Step 3: Cross multiply
    13,285.20x = 18,333.48 × 7,316.88
  4. Step 4: Simplify right side
    13,285.20x = 134,143,873.14
  5. Step 5: Solve for x
    x = 134,143,873.14/13,285.20
  6. Step 6: Final answer
    x = 10,097.24

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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.