Home / 19,209.96-28,749.60-14,115.60

Finding the Fourth Proportional to 19,209.96, 28,749.60 and 14,115.60

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Solution

The fourth proportional to 19,209.96, 28,749.60 and 14,115.60 is: 21,125.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,209.96 : 28,749.60 = 14,115.60 : x
  2. Step 2: Convert to fraction form
    19,209.96/28,749.60 = 14,115.60/x
  3. Step 3: Cross multiply
    19,209.96x = 28,749.60 × 14,115.60
  4. Step 4: Simplify right side
    19,209.96x = 405,817,853.76
  5. Step 5: Solve for x
    x = 405,817,853.76/19,209.96
  6. Step 6: Final answer
    x = 21,125.39

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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.