Home / 19,290.52-28,905.86-13,378.94

Finding the Fourth Proportional to 19,290.52, 28,905.86 and 13,378.94

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Solution

The fourth proportional to 19,290.52, 28,905.86 and 13,378.94 is: 20,047.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,290.52 : 28,905.86 = 13,378.94 : x
  2. Step 2: Convert to fraction form
    19,290.52/28,905.86 = 13,378.94/x
  3. Step 3: Cross multiply
    19,290.52x = 28,905.86 × 13,378.94
  4. Step 4: Simplify right side
    19,290.52x = 386,729,763.90
  5. Step 5: Solve for x
    x = 386,729,763.90/19,290.52
  6. Step 6: Final answer
    x = 20,047.66

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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.