Home / 18,962.05-28,430.93-7,876.39

Finding the Fourth Proportional to 18,962.05, 28,430.93 and 7,876.39

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Solution

The fourth proportional to 18,962.05, 28,430.93 and 7,876.39 is: 11,809.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,962.05 : 28,430.93 = 7,876.39 : x
  2. Step 2: Convert to fraction form
    18,962.05/28,430.93 = 7,876.39/x
  3. Step 3: Cross multiply
    18,962.05x = 28,430.93 × 7,876.39
  4. Step 4: Simplify right side
    18,962.05x = 223,933,092.74
  5. Step 5: Solve for x
    x = 223,933,092.74/18,962.05
  6. Step 6: Final answer
    x = 11,809.54

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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.