Home / 13,287.72-18,317.86-9,296.36

Finding the Fourth Proportional to 13,287.72, 18,317.86 and 9,296.36

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Solution

The fourth proportional to 13,287.72, 18,317.86 and 9,296.36 is: 12,815.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,287.72 : 18,317.86 = 9,296.36 : x
  2. Step 2: Convert to fraction form
    13,287.72/18,317.86 = 9,296.36/x
  3. Step 3: Cross multiply
    13,287.72x = 18,317.86 × 9,296.36
  4. Step 4: Simplify right side
    13,287.72x = 170,289,420.99
  5. Step 5: Solve for x
    x = 170,289,420.99/13,287.72
  6. Step 6: Final answer
    x = 12,815.55

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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.