Home / 18,930.88-28,400.40-5,784.28

Finding the Fourth Proportional to 18,930.88, 28,400.40 and 5,784.28

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Solution

The fourth proportional to 18,930.88, 28,400.40 and 5,784.28 is: 8,677.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,930.88 : 28,400.40 = 5,784.28 : x
  2. Step 2: Convert to fraction form
    18,930.88/28,400.40 = 5,784.28/x
  3. Step 3: Cross multiply
    18,930.88x = 28,400.40 × 5,784.28
  4. Step 4: Simplify right side
    18,930.88x = 164,275,865.71
  5. Step 5: Solve for x
    x = 164,275,865.71/18,930.88
  6. Step 6: Final answer
    x = 8,677.67

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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.