Home / 19,002.80-28,504.20-12,004.40

Finding the Fourth Proportional to 19,002.80, 28,504.20 and 12,004.40

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Solution

The fourth proportional to 19,002.80, 28,504.20 and 12,004.40 is: 18,006.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,002.80 : 28,504.20 = 12,004.40 : x
  2. Step 2: Convert to fraction form
    19,002.80/28,504.20 = 12,004.40/x
  3. Step 3: Cross multiply
    19,002.80x = 28,504.20 × 12,004.40
  4. Step 4: Simplify right side
    19,002.80x = 342,175,818.48
  5. Step 5: Solve for x
    x = 342,175,818.48/19,002.80
  6. Step 6: Final answer
    x = 18,006.60

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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.