Home / 19,087.08-28,635.12-7,987.56

Finding the Fourth Proportional to 19,087.08, 28,635.12 and 7,987.56

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Solution

The fourth proportional to 19,087.08, 28,635.12 and 7,987.56 is: 11,983.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,087.08 : 28,635.12 = 7,987.56 : x
  2. Step 2: Convert to fraction form
    19,087.08/28,635.12 = 7,987.56/x
  3. Step 3: Cross multiply
    19,087.08x = 28,635.12 × 7,987.56
  4. Step 4: Simplify right side
    19,087.08x = 228,724,739.11
  5. Step 5: Solve for x
    x = 228,724,739.11/19,087.08
  6. Step 6: Final answer
    x = 11,983.22

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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.