Home / 28,431.18-39,222.34-16,487.59

Finding the Fourth Proportional to 28,431.18, 39,222.34 and 16,487.59

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Solution

The fourth proportional to 28,431.18, 39,222.34 and 16,487.59 is: 22,745.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,431.18 : 39,222.34 = 16,487.59 : x
  2. Step 2: Convert to fraction form
    28,431.18/39,222.34 = 16,487.59/x
  3. Step 3: Cross multiply
    28,431.18x = 39,222.34 × 16,487.59
  4. Step 4: Simplify right side
    28,431.18x = 646,681,778.32
  5. Step 5: Solve for x
    x = 646,681,778.32/28,431.18
  6. Step 6: Final answer
    x = 22,745.52

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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.