Home / 12,343.11-18,513.61-9,990.27

Finding the Fourth Proportional to 12,343.11, 18,513.61 and 9,990.27

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Solution

The fourth proportional to 12,343.11, 18,513.61 and 9,990.27 is: 14,984.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,343.11 : 18,513.61 = 9,990.27 : x
  2. Step 2: Convert to fraction form
    12,343.11/18,513.61 = 9,990.27/x
  3. Step 3: Cross multiply
    12,343.11x = 18,513.61 × 9,990.27
  4. Step 4: Simplify right side
    12,343.11x = 184,955,820.06
  5. Step 5: Solve for x
    x = 184,955,820.06/12,343.11
  6. Step 6: Final answer
    x = 14,984.54

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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.