Home / 19,016.20-28,539.06-12,440.56

Finding the Fourth Proportional to 19,016.20, 28,539.06 and 12,440.56

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Solution

The fourth proportional to 19,016.20, 28,539.06 and 12,440.56 is: 18,670.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,016.20 : 28,539.06 = 12,440.56 : x
  2. Step 2: Convert to fraction form
    19,016.20/28,539.06 = 12,440.56/x
  3. Step 3: Cross multiply
    19,016.20x = 28,539.06 × 12,440.56
  4. Step 4: Simplify right side
    19,016.20x = 355,041,888.27
  5. Step 5: Solve for x
    x = 355,041,888.27/19,016.20
  6. Step 6: Final answer
    x = 18,670.50

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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.