Home / 17,161.40-23,670.51-15,749.64

Finding the Fourth Proportional to 17,161.40, 23,670.51 and 15,749.64

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Solution

The fourth proportional to 17,161.40, 23,670.51 and 15,749.64 is: 21,723.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,161.40 : 23,670.51 = 15,749.64 : x
  2. Step 2: Convert to fraction form
    17,161.40/23,670.51 = 15,749.64/x
  3. Step 3: Cross multiply
    17,161.40x = 23,670.51 × 15,749.64
  4. Step 4: Simplify right side
    17,161.40x = 372,802,011.12
  5. Step 5: Solve for x
    x = 372,802,011.12/17,161.40
  6. Step 6: Final answer
    x = 21,723.29

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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.