Home / 15,887.37-21,923.83-8,717.12

Finding the Fourth Proportional to 15,887.37, 21,923.83 and 8,717.12

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Solution

The fourth proportional to 15,887.37, 21,923.83 and 8,717.12 is: 12,029.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,887.37 : 21,923.83 = 8,717.12 : x
  2. Step 2: Convert to fraction form
    15,887.37/21,923.83 = 8,717.12/x
  3. Step 3: Cross multiply
    15,887.37x = 21,923.83 × 8,717.12
  4. Step 4: Simplify right side
    15,887.37x = 191,112,696.18
  5. Step 5: Solve for x
    x = 191,112,696.18/15,887.37
  6. Step 6: Final answer
    x = 12,029.22

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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.