Home / 19,108.96-28,656.62-7,861.02

Finding the Fourth Proportional to 19,108.96, 28,656.62 and 7,861.02

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Solution

The fourth proportional to 19,108.96, 28,656.62 and 7,861.02 is: 11,788.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,108.96 : 28,656.62 = 7,861.02 : x
  2. Step 2: Convert to fraction form
    19,108.96/28,656.62 = 7,861.02/x
  3. Step 3: Cross multiply
    19,108.96x = 28,656.62 × 7,861.02
  4. Step 4: Simplify right side
    19,108.96x = 225,270,139.32
  5. Step 5: Solve for x
    x = 225,270,139.32/19,108.96
  6. Step 6: Final answer
    x = 11,788.72

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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.