Home / 28,408.06-39,273.98-21,322.18

Finding the Fourth Proportional to 28,408.06, 39,273.98 and 21,322.18

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Solution

The fourth proportional to 28,408.06, 39,273.98 and 21,322.18 is: 29,477.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,408.06 : 39,273.98 = 21,322.18 : x
  2. Step 2: Convert to fraction form
    28,408.06/39,273.98 = 21,322.18/x
  3. Step 3: Cross multiply
    28,408.06x = 39,273.98 × 21,322.18
  4. Step 4: Simplify right side
    28,408.06x = 837,406,870.88
  5. Step 5: Solve for x
    x = 837,406,870.88/28,408.06
  6. Step 6: Final answer
    x = 29,477.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.