Home / 13,928.04-19,220.94-7,640.46

Finding the Fourth Proportional to 13,928.04, 19,220.94 and 7,640.46

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Solution

The fourth proportional to 13,928.04, 19,220.94 and 7,640.46 is: 10,543.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,928.04 : 19,220.94 = 7,640.46 : x
  2. Step 2: Convert to fraction form
    13,928.04/19,220.94 = 7,640.46/x
  3. Step 3: Cross multiply
    13,928.04x = 19,220.94 × 7,640.46
  4. Step 4: Simplify right side
    13,928.04x = 146,856,823.23
  5. Step 5: Solve for x
    x = 146,856,823.23/13,928.04
  6. Step 6: Final answer
    x = 10,543.97

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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.