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Finding the Fourth Proportional to 28,300.70, 42,470.48 and 9,832.70

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Solution

The fourth proportional to 28,300.70, 42,470.48 and 9,832.70 is: 14,755.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,300.70 : 42,470.48 = 9,832.70 : x
  2. Step 2: Convert to fraction form
    28,300.70/42,470.48 = 9,832.70/x
  3. Step 3: Cross multiply
    28,300.70x = 42,470.48 × 9,832.70
  4. Step 4: Simplify right side
    28,300.70x = 417,599,488.70
  5. Step 5: Solve for x
    x = 417,599,488.70/28,300.70
  6. Step 6: Final answer
    x = 14,755.80

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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.