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Finding the Fourth Proportional to 14,053.53, 21,069.91 and 8,505.65

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Solution

The fourth proportional to 14,053.53, 21,069.91 and 8,505.65 is: 12,752.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,053.53 : 21,069.91 = 8,505.65 : x
  2. Step 2: Convert to fraction form
    14,053.53/21,069.91 = 8,505.65/x
  3. Step 3: Cross multiply
    14,053.53x = 21,069.91 × 8,505.65
  4. Step 4: Simplify right side
    14,053.53x = 179,213,279.99
  5. Step 5: Solve for x
    x = 179,213,279.99/14,053.53
  6. Step 6: Final answer
    x = 12,752.19

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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.