Home / 13,609.42-20,411.70-8,664.37

Finding the Fourth Proportional to 13,609.42, 20,411.70 and 8,664.37

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Solution

The fourth proportional to 13,609.42, 20,411.70 and 8,664.37 is: 12,995.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,609.42 : 20,411.70 = 8,664.37 : x
  2. Step 2: Convert to fraction form
    13,609.42/20,411.70 = 8,664.37/x
  3. Step 3: Cross multiply
    13,609.42x = 20,411.70 × 8,664.37
  4. Step 4: Simplify right side
    13,609.42x = 176,854,521.13
  5. Step 5: Solve for x
    x = 176,854,521.13/13,609.42
  6. Step 6: Final answer
    x = 12,995.01

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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.