Home / 15,707.25-21,674.79-8,991.27

Finding the Fourth Proportional to 15,707.25, 21,674.79 and 8,991.27

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Solution

The fourth proportional to 15,707.25, 21,674.79 and 8,991.27 is: 12,407.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,707.25 : 21,674.79 = 8,991.27 : x
  2. Step 2: Convert to fraction form
    15,707.25/21,674.79 = 8,991.27/x
  3. Step 3: Cross multiply
    15,707.25x = 21,674.79 × 8,991.27
  4. Step 4: Simplify right side
    15,707.25x = 194,883,889.08
  5. Step 5: Solve for x
    x = 194,883,889.08/15,707.25
  6. Step 6: Final answer
    x = 12,407.26

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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.