Home / 13,275.32-18,321.06-7,611.80

Finding the Fourth Proportional to 13,275.32, 18,321.06 and 7,611.80

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Solution

The fourth proportional to 13,275.32, 18,321.06 and 7,611.80 is: 10,504.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,275.32 : 18,321.06 = 7,611.80 : x
  2. Step 2: Convert to fraction form
    13,275.32/18,321.06 = 7,611.80/x
  3. Step 3: Cross multiply
    13,275.32x = 18,321.06 × 7,611.80
  4. Step 4: Simplify right side
    13,275.32x = 139,456,244.51
  5. Step 5: Solve for x
    x = 139,456,244.51/13,275.32
  6. Step 6: Final answer
    x = 10,504.93

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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.