Home / 21,898.40-30,219.88-12,467.52

Finding the Fourth Proportional to 21,898.40, 30,219.88 and 12,467.52

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Solution

The fourth proportional to 21,898.40, 30,219.88 and 12,467.52 is: 17,205.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,898.40 : 30,219.88 = 12,467.52 : x
  2. Step 2: Convert to fraction form
    21,898.40/30,219.88 = 12,467.52/x
  3. Step 3: Cross multiply
    21,898.40x = 30,219.88 × 12,467.52
  4. Step 4: Simplify right side
    21,898.40x = 376,766,958.30
  5. Step 5: Solve for x
    x = 376,766,958.30/21,898.40
  6. Step 6: Final answer
    x = 17,205.23

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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.