Home / 21,315.65-31,973.52-6,524.51

Finding the Fourth Proportional to 21,315.65, 31,973.52 and 6,524.51

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Solution

The fourth proportional to 21,315.65, 31,973.52 and 6,524.51 is: 9,786.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,315.65 : 31,973.52 = 6,524.51 : x
  2. Step 2: Convert to fraction form
    21,315.65/31,973.52 = 6,524.51/x
  3. Step 3: Cross multiply
    21,315.65x = 31,973.52 × 6,524.51
  4. Step 4: Simplify right side
    21,315.65x = 208,611,391.11
  5. Step 5: Solve for x
    x = 208,611,391.11/21,315.65
  6. Step 6: Final answer
    x = 9,786.77

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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.