Home / 13,277.04-18,321.28-7,611.72

Finding the Fourth Proportional to 13,277.04, 18,321.28 and 7,611.72

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Solution

The fourth proportional to 13,277.04, 18,321.28 and 7,611.72 is: 10,503.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,277.04 : 18,321.28 = 7,611.72 : x
  2. Step 2: Convert to fraction form
    13,277.04/18,321.28 = 7,611.72/x
  3. Step 3: Cross multiply
    13,277.04x = 18,321.28 × 7,611.72
  4. Step 4: Simplify right side
    13,277.04x = 139,456,453.40
  5. Step 5: Solve for x
    x = 139,456,453.40/13,277.04
  6. Step 6: Final answer
    x = 10,503.58

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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.