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Finding the Fourth Proportional to 15,751.60, 23,621.80 and 6,970.80

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Solution

The fourth proportional to 15,751.60, 23,621.80 and 6,970.80 is: 10,453.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,751.60 : 23,621.80 = 6,970.80 : x
  2. Step 2: Convert to fraction form
    15,751.60/23,621.80 = 6,970.80/x
  3. Step 3: Cross multiply
    15,751.60x = 23,621.80 × 6,970.80
  4. Step 4: Simplify right side
    15,751.60x = 164,662,843.44
  5. Step 5: Solve for x
    x = 164,662,843.44/15,751.60
  6. Step 6: Final answer
    x = 10,453.72

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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.