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Finding the Fourth Proportional to 9,993.38, 14,990.87 and 4,070.66

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Solution

The fourth proportional to 9,993.38, 14,990.87 and 4,070.66 is: 6,106.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,993.38 : 14,990.87 = 4,070.66 : x
  2. Step 2: Convert to fraction form
    9,993.38/14,990.87 = 4,070.66/x
  3. Step 3: Cross multiply
    9,993.38x = 14,990.87 × 4,070.66
  4. Step 4: Simplify right side
    9,993.38x = 61,022,670.10
  5. Step 5: Solve for x
    x = 61,022,670.10/9,993.38
  6. Step 6: Final answer
    x = 6,106.31

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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.