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Finding the Fourth Proportional to 28,550.70, 42,783.84 and 25,436.70

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Solution

The fourth proportional to 28,550.70, 42,783.84 and 25,436.70 is: 38,117.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,550.70 : 42,783.84 = 25,436.70 : x
  2. Step 2: Convert to fraction form
    28,550.70/42,783.84 = 25,436.70/x
  3. Step 3: Cross multiply
    28,550.70x = 42,783.84 × 25,436.70
  4. Step 4: Simplify right side
    28,550.70x = 1,088,279,702.93
  5. Step 5: Solve for x
    x = 1,088,279,702.93/28,550.70
  6. Step 6: Final answer
    x = 38,117.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.