Home / 20,684.04-28,543.24-12,184.20

Finding the Fourth Proportional to 20,684.04, 28,543.24 and 12,184.20

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Solution

The fourth proportional to 20,684.04, 28,543.24 and 12,184.20 is: 16,813.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,684.04 : 28,543.24 = 12,184.20 : x
  2. Step 2: Convert to fraction form
    20,684.04/28,543.24 = 12,184.20/x
  3. Step 3: Cross multiply
    20,684.04x = 28,543.24 × 12,184.20
  4. Step 4: Simplify right side
    20,684.04x = 347,776,544.81
  5. Step 5: Solve for x
    x = 347,776,544.81/20,684.04
  6. Step 6: Final answer
    x = 16,813.76

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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.