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Finding the Fourth Proportional to 19,305.78, 28,938.83 and 10,967.99

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Solution

The fourth proportional to 19,305.78, 28,938.83 and 10,967.99 is: 16,440.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,305.78 : 28,938.83 = 10,967.99 : x
  2. Step 2: Convert to fraction form
    19,305.78/28,938.83 = 10,967.99/x
  3. Step 3: Cross multiply
    19,305.78x = 28,938.83 × 10,967.99
  4. Step 4: Simplify right side
    19,305.78x = 317,400,598.52
  5. Step 5: Solve for x
    x = 317,400,598.52/19,305.78
  6. Step 6: Final answer
    x = 16,440.70

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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.