Home / 12,453.78-18,701.84-8,320.35

Finding the Fourth Proportional to 12,453.78, 18,701.84 and 8,320.35

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Solution

The fourth proportional to 12,453.78, 18,701.84 and 8,320.35 is: 12,494.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,453.78 : 18,701.84 = 8,320.35 : x
  2. Step 2: Convert to fraction form
    12,453.78/18,701.84 = 8,320.35/x
  3. Step 3: Cross multiply
    12,453.78x = 18,701.84 × 8,320.35
  4. Step 4: Simplify right side
    12,453.78x = 155,605,812.84
  5. Step 5: Solve for x
    x = 155,605,812.84/12,453.78
  6. Step 6: Final answer
    x = 12,494.67

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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.