Home / 21,539.40-32,309.12-8,209.29

Finding the Fourth Proportional to 21,539.40, 32,309.12 and 8,209.29

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Solution

The fourth proportional to 21,539.40, 32,309.12 and 8,209.29 is: 12,313.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,539.40 : 32,309.12 = 8,209.29 : x
  2. Step 2: Convert to fraction form
    21,539.40/32,309.12 = 8,209.29/x
  3. Step 3: Cross multiply
    21,539.40x = 32,309.12 × 8,209.29
  4. Step 4: Simplify right side
    21,539.40x = 265,234,935.72
  5. Step 5: Solve for x
    x = 265,234,935.72/21,539.40
  6. Step 6: Final answer
    x = 12,313.94

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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.