Home / 21,231.36-31,852.80-7,381.44

Finding the Fourth Proportional to 21,231.36, 31,852.80 and 7,381.44

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Solution

The fourth proportional to 21,231.36, 31,852.80 and 7,381.44 is: 11,074.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,231.36 : 31,852.80 = 7,381.44 : x
  2. Step 2: Convert to fraction form
    21,231.36/31,852.80 = 7,381.44/x
  3. Step 3: Cross multiply
    21,231.36x = 31,852.80 × 7,381.44
  4. Step 4: Simplify right side
    21,231.36x = 235,119,532.03
  5. Step 5: Solve for x
    x = 235,119,532.03/21,231.36
  6. Step 6: Final answer
    x = 11,074.16

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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.