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Finding the Fourth Proportional to 12,006.20, 18,009.30 and 4,710.20

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Solution

The fourth proportional to 12,006.20, 18,009.30 and 4,710.20 is: 7,065.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,006.20 : 18,009.30 = 4,710.20 : x
  2. Step 2: Convert to fraction form
    12,006.20/18,009.30 = 4,710.20/x
  3. Step 3: Cross multiply
    12,006.20x = 18,009.30 × 4,710.20
  4. Step 4: Simplify right side
    12,006.20x = 84,827,404.86
  5. Step 5: Solve for x
    x = 84,827,404.86/12,006.20
  6. Step 6: Final answer
    x = 7,065.30

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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.