Home / 13,785.26-19,024.09-7,817.18

Finding the Fourth Proportional to 13,785.26, 19,024.09 and 7,817.18

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Solution

The fourth proportional to 13,785.26, 19,024.09 and 7,817.18 is: 10,787.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,785.26 : 19,024.09 = 7,817.18 : x
  2. Step 2: Convert to fraction form
    13,785.26/19,024.09 = 7,817.18/x
  3. Step 3: Cross multiply
    13,785.26x = 19,024.09 × 7,817.18
  4. Step 4: Simplify right side
    13,785.26x = 148,714,735.87
  5. Step 5: Solve for x
    x = 148,714,735.87/13,785.26
  6. Step 6: Final answer
    x = 10,787.95

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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.