Home / 13,197.10-19,768.10-7,915.36

Finding the Fourth Proportional to 13,197.10, 19,768.10 and 7,915.36

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Solution

The fourth proportional to 13,197.10, 19,768.10 and 7,915.36 is: 11,856.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,197.10 : 19,768.10 = 7,915.36 : x
  2. Step 2: Convert to fraction form
    13,197.10/19,768.10 = 7,915.36/x
  3. Step 3: Cross multiply
    13,197.10x = 19,768.10 × 7,915.36
  4. Step 4: Simplify right side
    13,197.10x = 156,471,628.02
  5. Step 5: Solve for x
    x = 156,471,628.02/13,197.10
  6. Step 6: Final answer
    x = 11,856.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.