Home / 15,745.04-21,738.60-9,785.60

Finding the Fourth Proportional to 15,745.04, 21,738.60 and 9,785.60

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Solution

The fourth proportional to 15,745.04, 21,738.60 and 9,785.60 is: 13,510.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,745.04 : 21,738.60 = 9,785.60 : x
  2. Step 2: Convert to fraction form
    15,745.04/21,738.60 = 9,785.60/x
  3. Step 3: Cross multiply
    15,745.04x = 21,738.60 × 9,785.60
  4. Step 4: Simplify right side
    15,745.04x = 212,725,244.16
  5. Step 5: Solve for x
    x = 212,725,244.16/15,745.04
  6. Step 6: Final answer
    x = 13,510.62

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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.