Home / 13,619.64-18,802.26-9,166.80

Finding the Fourth Proportional to 13,619.64, 18,802.26 and 9,166.80

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Solution

The fourth proportional to 13,619.64, 18,802.26 and 9,166.80 is: 12,655.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,619.64 : 18,802.26 = 9,166.80 : x
  2. Step 2: Convert to fraction form
    13,619.64/18,802.26 = 9,166.80/x
  3. Step 3: Cross multiply
    13,619.64x = 18,802.26 × 9,166.80
  4. Step 4: Simplify right side
    13,619.64x = 172,356,556.97
  5. Step 5: Solve for x
    x = 172,356,556.97/13,619.64
  6. Step 6: Final answer
    x = 12,655.00

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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.