Home / 19,285.08-28,931.70-6,138.54

Finding the Fourth Proportional to 19,285.08, 28,931.70 and 6,138.54

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Solution

The fourth proportional to 19,285.08, 28,931.70 and 6,138.54 is: 9,209.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,285.08 : 28,931.70 = 6,138.54 : x
  2. Step 2: Convert to fraction form
    19,285.08/28,931.70 = 6,138.54/x
  3. Step 3: Cross multiply
    19,285.08x = 28,931.70 × 6,138.54
  4. Step 4: Simplify right side
    19,285.08x = 177,598,397.72
  5. Step 5: Solve for x
    x = 177,598,397.72/19,285.08
  6. Step 6: Final answer
    x = 9,209.11

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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.