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Finding the Fourth Proportional to 36,479.70, 54,719.55 and 14,285.70

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Solution

The fourth proportional to 36,479.70, 54,719.55 and 14,285.70 is: 21,428.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,479.70 : 54,719.55 = 14,285.70 : x
  2. Step 2: Convert to fraction form
    36,479.70/54,719.55 = 14,285.70/x
  3. Step 3: Cross multiply
    36,479.70x = 54,719.55 × 14,285.70
  4. Step 4: Simplify right side
    36,479.70x = 781,707,075.44
  5. Step 5: Solve for x
    x = 781,707,075.44/36,479.70
  6. Step 6: Final answer
    x = 21,428.55

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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.