Home / 18,684.16-28,006.72-7,586.40

Finding the Fourth Proportional to 18,684.16, 28,006.72 and 7,586.40

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Solution

The fourth proportional to 18,684.16, 28,006.72 and 7,586.40 is: 11,371.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,684.16 : 28,006.72 = 7,586.40 : x
  2. Step 2: Convert to fraction form
    18,684.16/28,006.72 = 7,586.40/x
  3. Step 3: Cross multiply
    18,684.16x = 28,006.72 × 7,586.40
  4. Step 4: Simplify right side
    18,684.16x = 212,470,180.61
  5. Step 5: Solve for x
    x = 212,470,180.61/18,684.16
  6. Step 6: Final answer
    x = 11,371.67

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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.