Home / 12,861.06-19,287.60-5,465.40

Finding the Fourth Proportional to 12,861.06, 19,287.60 and 5,465.40

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Solution

The fourth proportional to 12,861.06, 19,287.60 and 5,465.40 is: 8,196.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,861.06 : 19,287.60 = 5,465.40 : x
  2. Step 2: Convert to fraction form
    12,861.06/19,287.60 = 5,465.40/x
  3. Step 3: Cross multiply
    12,861.06x = 19,287.60 × 5,465.40
  4. Step 4: Simplify right side
    12,861.06x = 105,414,449.04
  5. Step 5: Solve for x
    x = 105,414,449.04/12,861.06
  6. Step 6: Final answer
    x = 8,196.40

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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.