Home / 21,921.84-30,254.72-21,232.94

Finding the Fourth Proportional to 21,921.84, 30,254.72 and 21,232.94

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Solution

The fourth proportional to 21,921.84, 30,254.72 and 21,232.94 is: 29,303.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,921.84 : 30,254.72 = 21,232.94 : x
  2. Step 2: Convert to fraction form
    21,921.84/30,254.72 = 21,232.94/x
  3. Step 3: Cross multiply
    21,921.84x = 30,254.72 × 21,232.94
  4. Step 4: Simplify right side
    21,921.84x = 642,396,397.04
  5. Step 5: Solve for x
    x = 642,396,397.04/21,921.84
  6. Step 6: Final answer
    x = 29,303.95

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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.