Home / 20,499.63-30,762.26-8,812.81

Finding the Fourth Proportional to 20,499.63, 30,762.26 and 8,812.81

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Solution

The fourth proportional to 20,499.63, 30,762.26 and 8,812.81 is: 13,224.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,499.63 : 30,762.26 = 8,812.81 : x
  2. Step 2: Convert to fraction form
    20,499.63/30,762.26 = 8,812.81/x
  3. Step 3: Cross multiply
    20,499.63x = 30,762.26 × 8,812.81
  4. Step 4: Simplify right side
    20,499.63x = 271,101,952.55
  5. Step 5: Solve for x
    x = 271,101,952.55/20,499.63
  6. Step 6: Final answer
    x = 13,224.72

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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.