Home / 15,389.09-21,222.84-10,086.83

Finding the Fourth Proportional to 15,389.09, 21,222.84 and 10,086.83

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Solution

The fourth proportional to 15,389.09, 21,222.84 and 10,086.83 is: 13,910.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,389.09 : 21,222.84 = 10,086.83 : x
  2. Step 2: Convert to fraction form
    15,389.09/21,222.84 = 10,086.83/x
  3. Step 3: Cross multiply
    15,389.09x = 21,222.84 × 10,086.83
  4. Step 4: Simplify right side
    15,389.09x = 214,071,073.08
  5. Step 5: Solve for x
    x = 214,071,073.08/15,389.09
  6. Step 6: Final answer
    x = 13,910.58

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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.