Home / 19,263.78-28,912.14-13,730.67

Finding the Fourth Proportional to 19,263.78, 28,912.14 and 13,730.67

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Solution

The fourth proportional to 19,263.78, 28,912.14 and 13,730.67 is: 20,607.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,263.78 : 28,912.14 = 13,730.67 : x
  2. Step 2: Convert to fraction form
    19,263.78/28,912.14 = 13,730.67/x
  3. Step 3: Cross multiply
    19,263.78x = 28,912.14 × 13,730.67
  4. Step 4: Simplify right side
    19,263.78x = 396,983,053.33
  5. Step 5: Solve for x
    x = 396,983,053.33/19,263.78
  6. Step 6: Final answer
    x = 20,607.74

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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.