Home / 12,021.06-18,015.88-8,700.49

Finding the Fourth Proportional to 12,021.06, 18,015.88 and 8,700.49

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Solution

The fourth proportional to 12,021.06, 18,015.88 and 8,700.49 is: 13,039.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,021.06 : 18,015.88 = 8,700.49 : x
  2. Step 2: Convert to fraction form
    12,021.06/18,015.88 = 8,700.49/x
  3. Step 3: Cross multiply
    12,021.06x = 18,015.88 × 8,700.49
  4. Step 4: Simplify right side
    12,021.06x = 156,746,983.78
  5. Step 5: Solve for x
    x = 156,746,983.78/12,021.06
  6. Step 6: Final answer
    x = 13,039.36

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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.