Home / 14,389.99-21,558.24-7,821.70

Finding the Fourth Proportional to 14,389.99, 21,558.24 and 7,821.70

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Solution

The fourth proportional to 14,389.99, 21,558.24 and 7,821.70 is: 11,718.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,389.99 : 21,558.24 = 7,821.70 : x
  2. Step 2: Convert to fraction form
    14,389.99/21,558.24 = 7,821.70/x
  3. Step 3: Cross multiply
    14,389.99x = 21,558.24 × 7,821.70
  4. Step 4: Simplify right side
    14,389.99x = 168,622,031.91
  5. Step 5: Solve for x
    x = 168,622,031.91/14,389.99
  6. Step 6: Final answer
    x = 11,718.01

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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.