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Finding the Fourth Proportional to 28,152.80, 38,783.20 and 23,676.64

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Solution

The fourth proportional to 28,152.80, 38,783.20 and 23,676.64 is: 32,616.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,152.80 : 38,783.20 = 23,676.64 : x
  2. Step 2: Convert to fraction form
    28,152.80/38,783.20 = 23,676.64/x
  3. Step 3: Cross multiply
    28,152.80x = 38,783.20 × 23,676.64
  4. Step 4: Simplify right side
    28,152.80x = 918,255,864.45
  5. Step 5: Solve for x
    x = 918,255,864.45/28,152.80
  6. Step 6: Final answer
    x = 32,616.86

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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.