Home / 20,670.15-28,532.19-12,173.67

Finding the Fourth Proportional to 20,670.15, 28,532.19 and 12,173.67

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Solution

The fourth proportional to 20,670.15, 28,532.19 and 12,173.67 is: 16,804.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,670.15 : 28,532.19 = 12,173.67 : x
  2. Step 2: Convert to fraction form
    20,670.15/28,532.19 = 12,173.67/x
  3. Step 3: Cross multiply
    20,670.15x = 28,532.19 × 12,173.67
  4. Step 4: Simplify right side
    20,670.15x = 347,341,465.44
  5. Step 5: Solve for x
    x = 347,341,465.44/20,670.15
  6. Step 6: Final answer
    x = 16,804.01

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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.