Home / 13,975.44-19,287-7,688.40

Finding the Fourth Proportional to 13,975.44, 19,287 and 7,688.40

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Solution

The fourth proportional to 13,975.44, 19,287 and 7,688.40 is: 10,610.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,975.44 : 19,287 = 7,688.40 : x
  2. Step 2: Convert to fraction form
    13,975.44/19,287 = 7,688.40/x
  3. Step 3: Cross multiply
    13,975.44x = 19,287 × 7,688.40
  4. Step 4: Simplify right side
    13,975.44x = 148,286,170.80
  5. Step 5: Solve for x
    x = 148,286,170.80/13,975.44
  6. Step 6: Final answer
    x = 10,610.48

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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.