Home / 13,968.55-19,276.88-7,680.91

Finding the Fourth Proportional to 13,968.55, 19,276.88 and 7,680.91

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Solution

The fourth proportional to 13,968.55, 19,276.88 and 7,680.91 is: 10,599.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,968.55 : 19,276.88 = 7,680.91 : x
  2. Step 2: Convert to fraction form
    13,968.55/19,276.88 = 7,680.91/x
  3. Step 3: Cross multiply
    13,968.55x = 19,276.88 × 7,680.91
  4. Step 4: Simplify right side
    13,968.55x = 148,063,903.18
  5. Step 5: Solve for x
    x = 148,063,903.18/13,968.55
  6. Step 6: Final answer
    x = 10,599.81

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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.