Home / 19,191-28,788.26-5,340.12

Finding the Fourth Proportional to 19,191, 28,788.26 and 5,340.12

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Solution

The fourth proportional to 19,191, 28,788.26 and 5,340.12 is: 8,010.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,191 : 28,788.26 = 5,340.12 : x
  2. Step 2: Convert to fraction form
    19,191/28,788.26 = 5,340.12/x
  3. Step 3: Cross multiply
    19,191x = 28,788.26 × 5,340.12
  4. Step 4: Simplify right side
    19,191x = 153,732,762.99
  5. Step 5: Solve for x
    x = 153,732,762.99/19,191
  6. Step 6: Final answer
    x = 8,010.67

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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.