Home / 21,895.28-30,216.48-12,465.84

Finding the Fourth Proportional to 21,895.28, 30,216.48 and 12,465.84

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Solution

The fourth proportional to 21,895.28, 30,216.48 and 12,465.84 is: 17,203.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,895.28 : 30,216.48 = 12,465.84 : x
  2. Step 2: Convert to fraction form
    21,895.28/30,216.48 = 12,465.84/x
  3. Step 3: Cross multiply
    21,895.28x = 30,216.48 × 12,465.84
  4. Step 4: Simplify right side
    21,895.28x = 376,673,805.04
  5. Step 5: Solve for x
    x = 376,673,805.04/21,895.28
  6. Step 6: Final answer
    x = 17,203.42

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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.