Home / 12,505.60-18,758.40-3,271.60

Finding the Fourth Proportional to 12,505.60, 18,758.40 and 3,271.60

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Solution

The fourth proportional to 12,505.60, 18,758.40 and 3,271.60 is: 4,907.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,505.60 : 18,758.40 = 3,271.60 : x
  2. Step 2: Convert to fraction form
    12,505.60/18,758.40 = 3,271.60/x
  3. Step 3: Cross multiply
    12,505.60x = 18,758.40 × 3,271.60
  4. Step 4: Simplify right side
    12,505.60x = 61,369,981.44
  5. Step 5: Solve for x
    x = 61,369,981.44/12,505.60
  6. Step 6: Final answer
    x = 4,907.40

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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.