Home / 21,315.40-31,973.10-6,524.35

Finding the Fourth Proportional to 21,315.40, 31,973.10 and 6,524.35

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Solution

The fourth proportional to 21,315.40, 31,973.10 and 6,524.35 is: 9,786.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,315.40 : 31,973.10 = 6,524.35 : x
  2. Step 2: Convert to fraction form
    21,315.40/31,973.10 = 6,524.35/x
  3. Step 3: Cross multiply
    21,315.40x = 31,973.10 × 6,524.35
  4. Step 4: Simplify right side
    21,315.40x = 208,603,694.99
  5. Step 5: Solve for x
    x = 208,603,694.99/21,315.40
  6. Step 6: Final answer
    x = 9,786.53

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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.