Home / 30,131.81-41,598.45-20,586.05

Finding the Fourth Proportional to 30,131.81, 41,598.45 and 20,586.05

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Solution

The fourth proportional to 30,131.81, 41,598.45 and 20,586.05 is: 28,420.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,131.81 : 41,598.45 = 20,586.05 : x
  2. Step 2: Convert to fraction form
    30,131.81/41,598.45 = 20,586.05/x
  3. Step 3: Cross multiply
    30,131.81x = 41,598.45 × 20,586.05
  4. Step 4: Simplify right side
    30,131.81x = 856,347,771.62
  5. Step 5: Solve for x
    x = 856,347,771.62/30,131.81
  6. Step 6: Final answer
    x = 28,420.06

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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.