Home / 20,180.63-30,260.93-12,779.46

Finding the Fourth Proportional to 20,180.63, 30,260.93 and 12,779.46

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Solution

The fourth proportional to 20,180.63, 30,260.93 and 12,779.46 is: 19,162.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,180.63 : 30,260.93 = 12,779.46 : x
  2. Step 2: Convert to fraction form
    20,180.63/30,260.93 = 12,779.46/x
  3. Step 3: Cross multiply
    20,180.63x = 30,260.93 × 12,779.46
  4. Step 4: Simplify right side
    20,180.63x = 386,718,280.60
  5. Step 5: Solve for x
    x = 386,718,280.60/20,180.63
  6. Step 6: Final answer
    x = 19,162.84

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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.