Home / 21,898.98-30,188.97-15,600.42

Finding the Fourth Proportional to 21,898.98, 30,188.97 and 15,600.42

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Solution

The fourth proportional to 21,898.98, 30,188.97 and 15,600.42 is: 21,506.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,898.98 : 30,188.97 = 15,600.42 : x
  2. Step 2: Convert to fraction form
    21,898.98/30,188.97 = 15,600.42/x
  3. Step 3: Cross multiply
    21,898.98x = 30,188.97 × 15,600.42
  4. Step 4: Simplify right side
    21,898.98x = 470,960,611.37
  5. Step 5: Solve for x
    x = 470,960,611.37/21,898.98
  6. Step 6: Final answer
    x = 21,506.05

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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.