Home / 21,932.21-30,239.02-18,303.48

Finding the Fourth Proportional to 21,932.21, 30,239.02 and 18,303.48

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Solution

The fourth proportional to 21,932.21, 30,239.02 and 18,303.48 is: 25,235.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,932.21 : 30,239.02 = 18,303.48 : x
  2. Step 2: Convert to fraction form
    21,932.21/30,239.02 = 18,303.48/x
  3. Step 3: Cross multiply
    21,932.21x = 30,239.02 × 18,303.48
  4. Step 4: Simplify right side
    21,932.21x = 553,479,297.79
  5. Step 5: Solve for x
    x = 553,479,297.79/21,932.21
  6. Step 6: Final answer
    x = 25,235.91

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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.