Home / 15,808.36-21,806.40-10,219.36

Finding the Fourth Proportional to 15,808.36, 21,806.40 and 10,219.36

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Solution

The fourth proportional to 15,808.36, 21,806.40 and 10,219.36 is: 14,096.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,808.36 : 21,806.40 = 10,219.36 : x
  2. Step 2: Convert to fraction form
    15,808.36/21,806.40 = 10,219.36/x
  3. Step 3: Cross multiply
    15,808.36x = 21,806.40 × 10,219.36
  4. Step 4: Simplify right side
    15,808.36x = 222,847,451.90
  5. Step 5: Solve for x
    x = 222,847,451.90/15,808.36
  6. Step 6: Final answer
    x = 14,096.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.