Home / 12,954.24-19,431.48-4,189.20

Finding the Fourth Proportional to 12,954.24, 19,431.48 and 4,189.20

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Solution

The fourth proportional to 12,954.24, 19,431.48 and 4,189.20 is: 6,283.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,954.24 : 19,431.48 = 4,189.20 : x
  2. Step 2: Convert to fraction form
    12,954.24/19,431.48 = 4,189.20/x
  3. Step 3: Cross multiply
    12,954.24x = 19,431.48 × 4,189.20
  4. Step 4: Simplify right side
    12,954.24x = 81,402,356.02
  5. Step 5: Solve for x
    x = 81,402,356.02/12,954.24
  6. Step 6: Final answer
    x = 6,283.84

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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.