Home / 9,938.72-13,721.44-6,584.40

Finding the Fourth Proportional to 9,938.72, 13,721.44 and 6,584.40

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Solution

The fourth proportional to 9,938.72, 13,721.44 and 6,584.40 is: 9,090.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,938.72 : 13,721.44 = 6,584.40 : x
  2. Step 2: Convert to fraction form
    9,938.72/13,721.44 = 6,584.40/x
  3. Step 3: Cross multiply
    9,938.72x = 13,721.44 × 6,584.40
  4. Step 4: Simplify right side
    9,938.72x = 90,347,449.54
  5. Step 5: Solve for x
    x = 90,347,449.54/9,938.72
  6. Step 6: Final answer
    x = 9,090.45

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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.