Home / 21,388.20-32,081.70-9,701.40

Finding the Fourth Proportional to 21,388.20, 32,081.70 and 9,701.40

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Solution

The fourth proportional to 21,388.20, 32,081.70 and 9,701.40 is: 14,551.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,388.20 : 32,081.70 = 9,701.40 : x
  2. Step 2: Convert to fraction form
    21,388.20/32,081.70 = 9,701.40/x
  3. Step 3: Cross multiply
    21,388.20x = 32,081.70 × 9,701.40
  4. Step 4: Simplify right side
    21,388.20x = 311,237,404.38
  5. Step 5: Solve for x
    x = 311,237,404.38/21,388.20
  6. Step 6: Final answer
    x = 14,551.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.