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Finding the Fourth Proportional to 9,990.95, 14,995.53 and 4,443.26

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Solution

The fourth proportional to 9,990.95, 14,995.53 and 4,443.26 is: 6,668.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,990.95 : 14,995.53 = 4,443.26 : x
  2. Step 2: Convert to fraction form
    9,990.95/14,995.53 = 4,443.26/x
  3. Step 3: Cross multiply
    9,990.95x = 14,995.53 × 4,443.26
  4. Step 4: Simplify right side
    9,990.95x = 66,628,963.65
  5. Step 5: Solve for x
    x = 66,628,963.65/9,990.95
  6. Step 6: Final answer
    x = 6,668.94

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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.