Home / 13,968.21-19,275.87-7,680.60

Finding the Fourth Proportional to 13,968.21, 19,275.87 and 7,680.60

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Solution

The fourth proportional to 13,968.21, 19,275.87 and 7,680.60 is: 10,599.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,968.21 : 19,275.87 = 7,680.60 : x
  2. Step 2: Convert to fraction form
    13,968.21/19,275.87 = 7,680.60/x
  3. Step 3: Cross multiply
    13,968.21x = 19,275.87 × 7,680.60
  4. Step 4: Simplify right side
    13,968.21x = 148,050,247.12
  5. Step 5: Solve for x
    x = 148,050,247.12/13,968.21
  6. Step 6: Final answer
    x = 10,599.09

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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.