Home / 9,989.45-14,990.87-4,146.07

Finding the Fourth Proportional to 9,989.45, 14,990.87 and 4,146.07

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Solution

The fourth proportional to 9,989.45, 14,990.87 and 4,146.07 is: 6,221.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,989.45 : 14,990.87 = 4,146.07 : x
  2. Step 2: Convert to fraction form
    9,989.45/14,990.87 = 4,146.07/x
  3. Step 3: Cross multiply
    9,989.45x = 14,990.87 × 4,146.07
  4. Step 4: Simplify right side
    9,989.45x = 62,153,119.43
  5. Step 5: Solve for x
    x = 62,153,119.43/9,989.45
  6. Step 6: Final answer
    x = 6,221.88

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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.