Home / 8,427.47-12,621.50-6,660.62

Finding the Fourth Proportional to 8,427.47, 12,621.50 and 6,660.62

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Solution

The fourth proportional to 8,427.47, 12,621.50 and 6,660.62 is: 9,975.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,427.47 : 12,621.50 = 6,660.62 : x
  2. Step 2: Convert to fraction form
    8,427.47/12,621.50 = 6,660.62/x
  3. Step 3: Cross multiply
    8,427.47x = 12,621.50 × 6,660.62
  4. Step 4: Simplify right side
    8,427.47x = 84,066,918.92
  5. Step 5: Solve for x
    x = 84,066,918.92/8,427.47
  6. Step 6: Final answer
    x = 9,975.35

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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.