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Finding the Fourth Proportional to 9,991.77, 14,976.99 and 7,518.93

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Solution

The fourth proportional to 9,991.77, 14,976.99 and 7,518.93 is: 11,270.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,991.77 : 14,976.99 = 7,518.93 : x
  2. Step 2: Convert to fraction form
    9,991.77/14,976.99 = 7,518.93/x
  3. Step 3: Cross multiply
    9,991.77x = 14,976.99 × 7,518.93
  4. Step 4: Simplify right side
    9,991.77x = 112,610,939.42
  5. Step 5: Solve for x
    x = 112,610,939.42/9,991.77
  6. Step 6: Final answer
    x = 11,270.37

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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.