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Finding the Fourth Proportional to 21,809.13, 32,706.81 and 7,014.75

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Solution

The fourth proportional to 21,809.13, 32,706.81 and 7,014.75 is: 10,519.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,809.13 : 32,706.81 = 7,014.75 : x
  2. Step 2: Convert to fraction form
    21,809.13/32,706.81 = 7,014.75/x
  3. Step 3: Cross multiply
    21,809.13x = 32,706.81 × 7,014.75
  4. Step 4: Simplify right side
    21,809.13x = 229,430,095.45
  5. Step 5: Solve for x
    x = 229,430,095.45/21,809.13
  6. Step 6: Final answer
    x = 10,519.91

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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.