Home / 21,026.65-31,539.04-5,231.34

Finding the Fourth Proportional to 21,026.65, 31,539.04 and 5,231.34

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Solution

The fourth proportional to 21,026.65, 31,539.04 and 5,231.34 is: 7,846.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,026.65 : 31,539.04 = 5,231.34 : x
  2. Step 2: Convert to fraction form
    21,026.65/31,539.04 = 5,231.34/x
  3. Step 3: Cross multiply
    21,026.65x = 31,539.04 × 5,231.34
  4. Step 4: Simplify right side
    21,026.65x = 164,991,441.51
  5. Step 5: Solve for x
    x = 164,991,441.51/21,026.65
  6. Step 6: Final answer
    x = 7,846.78

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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.