Home / 14,145.57-21,219.45-4,285.65

Finding the Fourth Proportional to 14,145.57, 21,219.45 and 4,285.65

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Solution

The fourth proportional to 14,145.57, 21,219.45 and 4,285.65 is: 6,428.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,145.57 : 21,219.45 = 4,285.65 : x
  2. Step 2: Convert to fraction form
    14,145.57/21,219.45 = 4,285.65/x
  3. Step 3: Cross multiply
    14,145.57x = 21,219.45 × 4,285.65
  4. Step 4: Simplify right side
    14,145.57x = 90,939,135.89
  5. Step 5: Solve for x
    x = 90,939,135.89/14,145.57
  6. Step 6: Final answer
    x = 6,428.81

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Double scale
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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.