Home / 28,712.50-39,622.86-16,137.28

Finding the Fourth Proportional to 28,712.50, 39,622.86 and 16,137.28

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Solution

The fourth proportional to 28,712.50, 39,622.86 and 16,137.28 is: 22,269.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,712.50 : 39,622.86 = 16,137.28 : x
  2. Step 2: Convert to fraction form
    28,712.50/39,622.86 = 16,137.28/x
  3. Step 3: Cross multiply
    28,712.50x = 39,622.86 × 16,137.28
  4. Step 4: Simplify right side
    28,712.50x = 639,405,186.22
  5. Step 5: Solve for x
    x = 639,405,186.22/28,712.50
  6. Step 6: Final answer
    x = 22,269.23

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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.