Home / 19,012.56-28,531.80-8,631.60

Finding the Fourth Proportional to 19,012.56, 28,531.80 and 8,631.60

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Solution

The fourth proportional to 19,012.56, 28,531.80 and 8,631.60 is: 12,953.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,012.56 : 28,531.80 = 8,631.60 : x
  2. Step 2: Convert to fraction form
    19,012.56/28,531.80 = 8,631.60/x
  3. Step 3: Cross multiply
    19,012.56x = 28,531.80 × 8,631.60
  4. Step 4: Simplify right side
    19,012.56x = 246,275,084.88
  5. Step 5: Solve for x
    x = 246,275,084.88/19,012.56
  6. Step 6: Final answer
    x = 12,953.28

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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.