Home / 12,290.76-18,436.14-4,497.78

Finding the Fourth Proportional to 12,290.76, 18,436.14 and 4,497.78

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Solution

The fourth proportional to 12,290.76, 18,436.14 and 4,497.78 is: 6,746.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,290.76 : 18,436.14 = 4,497.78 : x
  2. Step 2: Convert to fraction form
    12,290.76/18,436.14 = 4,497.78/x
  3. Step 3: Cross multiply
    12,290.76x = 18,436.14 × 4,497.78
  4. Step 4: Simplify right side
    12,290.76x = 82,921,701.77
  5. Step 5: Solve for x
    x = 82,921,701.77/12,290.76
  6. Step 6: Final answer
    x = 6,746.67

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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.