Home / 21,621.48-32,417.82-7,768.68

Finding the Fourth Proportional to 21,621.48, 32,417.82 and 7,768.68

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Solution

The fourth proportional to 21,621.48, 32,417.82 and 7,768.68 is: 11,647.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,621.48 : 32,417.82 = 7,768.68 : x
  2. Step 2: Convert to fraction form
    21,621.48/32,417.82 = 7,768.68/x
  3. Step 3: Cross multiply
    21,621.48x = 32,417.82 × 7,768.68
  4. Step 4: Simplify right side
    21,621.48x = 251,843,669.88
  5. Step 5: Solve for x
    x = 251,843,669.88/21,621.48
  6. Step 6: Final answer
    x = 11,647.85

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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.