Home / 19,078.85-28,618.14-5,931.20

Finding the Fourth Proportional to 19,078.85, 28,618.14 and 5,931.20

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Solution

The fourth proportional to 19,078.85, 28,618.14 and 5,931.20 is: 8,896.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,078.85 : 28,618.14 = 5,931.20 : x
  2. Step 2: Convert to fraction form
    19,078.85/28,618.14 = 5,931.20/x
  3. Step 3: Cross multiply
    19,078.85x = 28,618.14 × 5,931.20
  4. Step 4: Simplify right side
    19,078.85x = 169,739,911.97
  5. Step 5: Solve for x
    x = 169,739,911.97/19,078.85
  6. Step 6: Final answer
    x = 8,896.76

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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.