Home / 21,424.38-29,622.06-18,764.16

Finding the Fourth Proportional to 21,424.38, 29,622.06 and 18,764.16

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Solution

The fourth proportional to 21,424.38, 29,622.06 and 18,764.16 is: 25,943.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,424.38 : 29,622.06 = 18,764.16 : x
  2. Step 2: Convert to fraction form
    21,424.38/29,622.06 = 18,764.16/x
  3. Step 3: Cross multiply
    21,424.38x = 29,622.06 × 18,764.16
  4. Step 4: Simplify right side
    21,424.38x = 555,833,073.37
  5. Step 5: Solve for x
    x = 555,833,073.37/21,424.38
  6. Step 6: Final answer
    x = 25,943.95

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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.