Home / 15,640.37-21,593.09-9,680.03

Finding the Fourth Proportional to 15,640.37, 21,593.09 and 9,680.03

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Solution

The fourth proportional to 15,640.37, 21,593.09 and 9,680.03 is: 13,364.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,640.37 : 21,593.09 = 9,680.03 : x
  2. Step 2: Convert to fraction form
    15,640.37/21,593.09 = 9,680.03/x
  3. Step 3: Cross multiply
    15,640.37x = 21,593.09 × 9,680.03
  4. Step 4: Simplify right side
    15,640.37x = 209,021,758.99
  5. Step 5: Solve for x
    x = 209,021,758.99/15,640.37
  6. Step 6: Final answer
    x = 13,364.25

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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.