Home / 14,145.59-21,219.44-4,285.67

Finding the Fourth Proportional to 14,145.59, 21,219.44 and 4,285.67

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Solution

The fourth proportional to 14,145.59, 21,219.44 and 4,285.67 is: 6,428.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,145.59 : 21,219.44 = 4,285.67 : x
  2. Step 2: Convert to fraction form
    14,145.59/21,219.44 = 4,285.67/x
  3. Step 3: Cross multiply
    14,145.59x = 21,219.44 × 4,285.67
  4. Step 4: Simplify right side
    14,145.59x = 90,939,389.90
  5. Step 5: Solve for x
    x = 90,939,389.90/14,145.59
  6. Step 6: Final answer
    x = 6,428.81

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Double scale
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Similar ratio
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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.