Home / 12,307.21-18,460.80-3,542.11

Finding the Fourth Proportional to 12,307.21, 18,460.80 and 3,542.11

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Solution

The fourth proportional to 12,307.21, 18,460.80 and 3,542.11 is: 5,313.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,307.21 : 18,460.80 = 3,542.11 : x
  2. Step 2: Convert to fraction form
    12,307.21/18,460.80 = 3,542.11/x
  3. Step 3: Cross multiply
    12,307.21x = 18,460.80 × 3,542.11
  4. Step 4: Simplify right side
    12,307.21x = 65,390,138.14
  5. Step 5: Solve for x
    x = 65,390,138.14/12,307.21
  6. Step 6: Final answer
    x = 5,313.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.