Home / 12,225.81-18,335.78-5,645.67

Finding the Fourth Proportional to 12,225.81, 18,335.78 and 5,645.67

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Solution

The fourth proportional to 12,225.81, 18,335.78 and 5,645.67 is: 8,467.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,225.81 : 18,335.78 = 5,645.67 : x
  2. Step 2: Convert to fraction form
    12,225.81/18,335.78 = 5,645.67/x
  3. Step 3: Cross multiply
    12,225.81x = 18,335.78 × 5,645.67
  4. Step 4: Simplify right side
    12,225.81x = 103,517,734.84
  5. Step 5: Solve for x
    x = 103,517,734.84/12,225.81
  6. Step 6: Final answer
    x = 8,467.15

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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.