Home / 15,771.75-21,765.33-10,192.47

Finding the Fourth Proportional to 15,771.75, 21,765.33 and 10,192.47

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Solution

The fourth proportional to 15,771.75, 21,765.33 and 10,192.47 is: 14,065.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,771.75 : 21,765.33 = 10,192.47 : x
  2. Step 2: Convert to fraction form
    15,771.75/21,765.33 = 10,192.47/x
  3. Step 3: Cross multiply
    15,771.75x = 21,765.33 × 10,192.47
  4. Step 4: Simplify right side
    15,771.75x = 221,842,473.07
  5. Step 5: Solve for x
    x = 221,842,473.07/15,771.75
  6. Step 6: Final answer
    x = 14,065.81

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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.