Home / 20,388.95-30,586.47-7,240.22

Finding the Fourth Proportional to 20,388.95, 30,586.47 and 7,240.22

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Solution

The fourth proportional to 20,388.95, 30,586.47 and 7,240.22 is: 10,861.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,388.95 : 30,586.47 = 7,240.22 : x
  2. Step 2: Convert to fraction form
    20,388.95/30,586.47 = 7,240.22/x
  3. Step 3: Cross multiply
    20,388.95x = 30,586.47 × 7,240.22
  4. Step 4: Simplify right side
    20,388.95x = 221,452,771.82
  5. Step 5: Solve for x
    x = 221,452,771.82/20,388.95
  6. Step 6: Final answer
    x = 10,861.41

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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.