Home / 30,118.90-41,571.04-20,047.76

Finding the Fourth Proportional to 30,118.90, 41,571.04 and 20,047.76

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Solution

The fourth proportional to 30,118.90, 41,571.04 and 20,047.76 is: 27,670.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,118.90 : 41,571.04 = 20,047.76 : x
  2. Step 2: Convert to fraction form
    30,118.90/41,571.04 = 20,047.76/x
  3. Step 3: Cross multiply
    30,118.90x = 41,571.04 × 20,047.76
  4. Step 4: Simplify right side
    30,118.90x = 833,406,232.87
  5. Step 5: Solve for x
    x = 833,406,232.87/30,118.90
  6. Step 6: Final answer
    x = 27,670.54

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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.