Home / 13,106.60-19,650.30-5,311.40

Finding the Fourth Proportional to 13,106.60, 19,650.30 and 5,311.40

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Solution

The fourth proportional to 13,106.60, 19,650.30 and 5,311.40 is: 7,963.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,106.60 : 19,650.30 = 5,311.40 : x
  2. Step 2: Convert to fraction form
    13,106.60/19,650.30 = 5,311.40/x
  3. Step 3: Cross multiply
    13,106.60x = 19,650.30 × 5,311.40
  4. Step 4: Simplify right side
    13,106.60x = 104,370,603.42
  5. Step 5: Solve for x
    x = 104,370,603.42/13,106.60
  6. Step 6: Final answer
    x = 7,963.21

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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.