Home / 28,490.96-39,316.74-15,745.08

Finding the Fourth Proportional to 28,490.96, 39,316.74 and 15,745.08

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Solution

The fourth proportional to 28,490.96, 39,316.74 and 15,745.08 is: 21,727.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,490.96 : 39,316.74 = 15,745.08 : x
  2. Step 2: Convert to fraction form
    28,490.96/39,316.74 = 15,745.08/x
  3. Step 3: Cross multiply
    28,490.96x = 39,316.74 × 15,745.08
  4. Step 4: Simplify right side
    28,490.96x = 619,045,216.64
  5. Step 5: Solve for x
    x = 619,045,216.64/28,490.96
  6. Step 6: Final answer
    x = 21,727.78

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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.