Home / 19,380.70-28,999.05-14,196.70

Finding the Fourth Proportional to 19,380.70, 28,999.05 and 14,196.70

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Solution

The fourth proportional to 19,380.70, 28,999.05 and 14,196.70 is: 21,242.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,380.70 : 28,999.05 = 14,196.70 : x
  2. Step 2: Convert to fraction form
    19,380.70/28,999.05 = 14,196.70/x
  3. Step 3: Cross multiply
    19,380.70x = 28,999.05 × 14,196.70
  4. Step 4: Simplify right side
    19,380.70x = 411,690,813.14
  5. Step 5: Solve for x
    x = 411,690,813.14/19,380.70
  6. Step 6: Final answer
    x = 21,242.31

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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.