Home / 13,102.12-18,080.52-7,281.21

Finding the Fourth Proportional to 13,102.12, 18,080.52 and 7,281.21

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Solution

The fourth proportional to 13,102.12, 18,080.52 and 7,281.21 is: 10,047.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,102.12 : 18,080.52 = 7,281.21 : x
  2. Step 2: Convert to fraction form
    13,102.12/18,080.52 = 7,281.21/x
  3. Step 3: Cross multiply
    13,102.12x = 18,080.52 × 7,281.21
  4. Step 4: Simplify right side
    13,102.12x = 131,648,012.41
  5. Step 5: Solve for x
    x = 131,648,012.41/13,102.12
  6. Step 6: Final answer
    x = 10,047.84

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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.