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Finding the Fourth Proportional to 28,652.88, 39,537.44 and 16,719.12

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Solution

The fourth proportional to 28,652.88, 39,537.44 and 16,719.12 is: 23,070.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,652.88 : 39,537.44 = 16,719.12 : x
  2. Step 2: Convert to fraction form
    28,652.88/39,537.44 = 16,719.12/x
  3. Step 3: Cross multiply
    28,652.88x = 39,537.44 × 16,719.12
  4. Step 4: Simplify right side
    28,652.88x = 661,031,203.85
  5. Step 5: Solve for x
    x = 661,031,203.85/28,652.88
  6. Step 6: Final answer
    x = 23,070.32

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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.