Home / 20,941.02-28,900.95-11,989.50

Finding the Fourth Proportional to 20,941.02, 28,900.95 and 11,989.50

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Solution

The fourth proportional to 20,941.02, 28,900.95 and 11,989.50 is: 16,546.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,941.02 : 28,900.95 = 11,989.50 : x
  2. Step 2: Convert to fraction form
    20,941.02/28,900.95 = 11,989.50/x
  3. Step 3: Cross multiply
    20,941.02x = 28,900.95 × 11,989.50
  4. Step 4: Simplify right side
    20,941.02x = 346,507,940.03
  5. Step 5: Solve for x
    x = 346,507,940.03/20,941.02
  6. Step 6: Final answer
    x = 16,546.85

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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.