Home / 21,245.74-29,301.67-18,857.45

Finding the Fourth Proportional to 21,245.74, 29,301.67 and 18,857.45

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Solution

The fourth proportional to 21,245.74, 29,301.67 and 18,857.45 is: 26,007.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,245.74 : 29,301.67 = 18,857.45 : x
  2. Step 2: Convert to fraction form
    21,245.74/29,301.67 = 18,857.45/x
  3. Step 3: Cross multiply
    21,245.74x = 29,301.67 × 18,857.45
  4. Step 4: Simplify right side
    21,245.74x = 552,554,776.94
  5. Step 5: Solve for x
    x = 552,554,776.94/21,245.74
  6. Step 6: Final answer
    x = 26,007.79

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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.