Home / 13,647.79-20,429.31-7,392.27

Finding the Fourth Proportional to 13,647.79, 20,429.31 and 7,392.27

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Solution

The fourth proportional to 13,647.79, 20,429.31 and 7,392.27 is: 11,065.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,647.79 : 20,429.31 = 7,392.27 : x
  2. Step 2: Convert to fraction form
    13,647.79/20,429.31 = 7,392.27/x
  3. Step 3: Cross multiply
    13,647.79x = 20,429.31 × 7,392.27
  4. Step 4: Simplify right side
    13,647.79x = 151,018,975.43
  5. Step 5: Solve for x
    x = 151,018,975.43/13,647.79
  6. Step 6: Final answer
    x = 11,065.45

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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.