Home / 21,345.40-32,023.70-8,198.20

Finding the Fourth Proportional to 21,345.40, 32,023.70 and 8,198.20

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Solution

The fourth proportional to 21,345.40, 32,023.70 and 8,198.20 is: 12,299.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,345.40 : 32,023.70 = 8,198.20 : x
  2. Step 2: Convert to fraction form
    21,345.40/32,023.70 = 8,198.20/x
  3. Step 3: Cross multiply
    21,345.40x = 32,023.70 × 8,198.20
  4. Step 4: Simplify right side
    21,345.40x = 262,536,697.34
  5. Step 5: Solve for x
    x = 262,536,697.34/21,345.40
  6. Step 6: Final answer
    x = 12,299.45

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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.