Home / 12,001.80-18,002.70-8,308.20

Finding the Fourth Proportional to 12,001.80, 18,002.70 and 8,308.20

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Solution

The fourth proportional to 12,001.80, 18,002.70 and 8,308.20 is: 12,462.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,001.80 : 18,002.70 = 8,308.20 : x
  2. Step 2: Convert to fraction form
    12,001.80/18,002.70 = 8,308.20/x
  3. Step 3: Cross multiply
    12,001.80x = 18,002.70 × 8,308.20
  4. Step 4: Simplify right side
    12,001.80x = 149,570,032.14
  5. Step 5: Solve for x
    x = 149,570,032.14/12,001.80
  6. Step 6: Final answer
    x = 12,462.30

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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.