Home / 15,887.09-21,923.84-8,813.45

Finding the Fourth Proportional to 15,887.09, 21,923.84 and 8,813.45

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Solution

The fourth proportional to 15,887.09, 21,923.84 and 8,813.45 is: 12,162.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,887.09 : 21,923.84 = 8,813.45 : x
  2. Step 2: Convert to fraction form
    15,887.09/21,923.84 = 8,813.45/x
  3. Step 3: Cross multiply
    15,887.09x = 21,923.84 × 8,813.45
  4. Step 4: Simplify right side
    15,887.09x = 193,224,580.06
  5. Step 5: Solve for x
    x = 193,224,580.06/15,887.09
  6. Step 6: Final answer
    x = 12,162.37

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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.