Home / 14,130.78-21,198.96-4,270.92

Finding the Fourth Proportional to 14,130.78, 21,198.96 and 4,270.92

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Solution

The fourth proportional to 14,130.78, 21,198.96 and 4,270.92 is: 6,407.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,130.78 : 21,198.96 = 4,270.92 : x
  2. Step 2: Convert to fraction form
    14,130.78/21,198.96 = 4,270.92/x
  3. Step 3: Cross multiply
    14,130.78x = 21,198.96 × 4,270.92
  4. Step 4: Simplify right side
    14,130.78x = 90,539,062.24
  5. Step 5: Solve for x
    x = 90,539,062.24/14,130.78
  6. Step 6: Final answer
    x = 6,407.22

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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.