Home / 19,320.10-28,974.56-8,784.26

Finding the Fourth Proportional to 19,320.10, 28,974.56 and 8,784.26

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Solution

The fourth proportional to 19,320.10, 28,974.56 and 8,784.26 is: 13,173.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,320.10 : 28,974.56 = 8,784.26 : x
  2. Step 2: Convert to fraction form
    19,320.10/28,974.56 = 8,784.26/x
  3. Step 3: Cross multiply
    19,320.10x = 28,974.56 × 8,784.26
  4. Step 4: Simplify right side
    19,320.10x = 254,520,068.43
  5. Step 5: Solve for x
    x = 254,520,068.43/19,320.10
  6. Step 6: Final answer
    x = 13,173.85

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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.