Home / 14,285.84-19,715.10-7,998.21

Finding the Fourth Proportional to 14,285.84, 19,715.10 and 7,998.21

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Solution

The fourth proportional to 14,285.84, 19,715.10 and 7,998.21 is: 11,037.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,285.84 : 19,715.10 = 7,998.21 : x
  2. Step 2: Convert to fraction form
    14,285.84/19,715.10 = 7,998.21/x
  3. Step 3: Cross multiply
    14,285.84x = 19,715.10 × 7,998.21
  4. Step 4: Simplify right side
    14,285.84x = 157,685,479.98
  5. Step 5: Solve for x
    x = 157,685,479.98/14,285.84
  6. Step 6: Final answer
    x = 11,037.89

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Half scale
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Double scale
Find fourth proportional to 14,286.84, 19,716.48 and 7,999.21
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.