Home / 12,647.23-18,982.48-6,411.67

Finding the Fourth Proportional to 12,647.23, 18,982.48 and 6,411.67

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Solution

The fourth proportional to 12,647.23, 18,982.48 and 6,411.67 is: 9,623.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,647.23 : 18,982.48 = 6,411.67 : x
  2. Step 2: Convert to fraction form
    12,647.23/18,982.48 = 6,411.67/x
  3. Step 3: Cross multiply
    12,647.23x = 18,982.48 × 6,411.67
  4. Step 4: Simplify right side
    12,647.23x = 121,709,334.06
  5. Step 5: Solve for x
    x = 121,709,334.06/12,647.23
  6. Step 6: Final answer
    x = 9,623.40

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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.