Home / 18,709.02-28,085.40-12,162.60

Finding the Fourth Proportional to 18,709.02, 28,085.40 and 12,162.60

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Solution

The fourth proportional to 18,709.02, 28,085.40 and 12,162.60 is: 18,258.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,709.02 : 28,085.40 = 12,162.60 : x
  2. Step 2: Convert to fraction form
    18,709.02/28,085.40 = 12,162.60/x
  3. Step 3: Cross multiply
    18,709.02x = 28,085.40 × 12,162.60
  4. Step 4: Simplify right side
    18,709.02x = 341,591,486.04
  5. Step 5: Solve for x
    x = 341,591,486.04/18,709.02
  6. Step 6: Final answer
    x = 18,258.12

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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.