Home / 28,803.15-39,745.62-21,253.68

Finding the Fourth Proportional to 28,803.15, 39,745.62 and 21,253.68

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Solution

The fourth proportional to 28,803.15, 39,745.62 and 21,253.68 is: 29,328.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,803.15 : 39,745.62 = 21,253.68 : x
  2. Step 2: Convert to fraction form
    28,803.15/39,745.62 = 21,253.68/x
  3. Step 3: Cross multiply
    28,803.15x = 39,745.62 × 21,253.68
  4. Step 4: Simplify right side
    28,803.15x = 844,740,688.88
  5. Step 5: Solve for x
    x = 844,740,688.88/28,803.15
  6. Step 6: Final answer
    x = 29,328.07

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Double scale
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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.