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Finding the Fourth Proportional to 28,703.16, 39,610.02 and 16,768.32

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Solution

The fourth proportional to 28,703.16, 39,610.02 and 16,768.32 is: 23,140.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,703.16 : 39,610.02 = 16,768.32 : x
  2. Step 2: Convert to fraction form
    28,703.16/39,610.02 = 16,768.32/x
  3. Step 3: Cross multiply
    28,703.16x = 39,610.02 × 16,768.32
  4. Step 4: Simplify right side
    28,703.16x = 664,193,490.57
  5. Step 5: Solve for x
    x = 664,193,490.57/28,703.16
  6. Step 6: Final answer
    x = 23,140.08

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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.