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Finding the Fourth Proportional to 12,349.71, 17,036.73 and 8,991

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Solution

The fourth proportional to 12,349.71, 17,036.73 and 8,991 is: 12,403.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,349.71 : 17,036.73 = 8,991 : x
  2. Step 2: Convert to fraction form
    12,349.71/17,036.73 = 8,991/x
  3. Step 3: Cross multiply
    12,349.71x = 17,036.73 × 8,991
  4. Step 4: Simplify right side
    12,349.71x = 153,177,239.43
  5. Step 5: Solve for x
    x = 153,177,239.43/12,349.71
  6. Step 6: Final answer
    x = 12,403.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.