Home / 28,974.48-40,002.84-19,915.44

Finding the Fourth Proportional to 28,974.48, 40,002.84 and 19,915.44

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Solution

The fourth proportional to 28,974.48, 40,002.84 and 19,915.44 is: 27,495.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,974.48 : 40,002.84 = 19,915.44 : x
  2. Step 2: Convert to fraction form
    28,974.48/40,002.84 = 19,915.44/x
  3. Step 3: Cross multiply
    28,974.48x = 40,002.84 × 19,915.44
  4. Step 4: Simplify right side
    28,974.48x = 796,674,159.85
  5. Step 5: Solve for x
    x = 796,674,159.85/28,974.48
  6. Step 6: Final answer
    x = 27,495.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.