Home / 19,128.37-28,692.56-5,980.86

Finding the Fourth Proportional to 19,128.37, 28,692.56 and 5,980.86

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Solution

The fourth proportional to 19,128.37, 28,692.56 and 5,980.86 is: 8,971.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,128.37 : 28,692.56 = 5,980.86 : x
  2. Step 2: Convert to fraction form
    19,128.37/28,692.56 = 5,980.86/x
  3. Step 3: Cross multiply
    19,128.37x = 28,692.56 × 5,980.86
  4. Step 4: Simplify right side
    19,128.37x = 171,606,184.40
  5. Step 5: Solve for x
    x = 171,606,184.40/19,128.37
  6. Step 6: Final answer
    x = 8,971.29

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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.