Home / 20,795.70-31,193.55-19,110.90

Finding the Fourth Proportional to 20,795.70, 31,193.55 and 19,110.90

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Solution

The fourth proportional to 20,795.70, 31,193.55 and 19,110.90 is: 28,666.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,795.70 : 31,193.55 = 19,110.90 : x
  2. Step 2: Convert to fraction form
    20,795.70/31,193.55 = 19,110.90/x
  3. Step 3: Cross multiply
    20,795.70x = 31,193.55 × 19,110.90
  4. Step 4: Simplify right side
    20,795.70x = 596,136,814.70
  5. Step 5: Solve for x
    x = 596,136,814.70/20,795.70
  6. Step 6: Final answer
    x = 28,666.35

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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.