Home / 28,761.21-39,689.60-16,015.05

Finding the Fourth Proportional to 28,761.21, 39,689.60 and 16,015.05

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Solution

The fourth proportional to 28,761.21, 39,689.60 and 16,015.05 is: 22,100.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,761.21 : 39,689.60 = 16,015.05 : x
  2. Step 2: Convert to fraction form
    28,761.21/39,689.60 = 16,015.05/x
  3. Step 3: Cross multiply
    28,761.21x = 39,689.60 × 16,015.05
  4. Step 4: Simplify right side
    28,761.21x = 635,630,848.40
  5. Step 5: Solve for x
    x = 635,630,848.40/28,761.21
  6. Step 6: Final answer
    x = 22,100.28

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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.