Home / 10,455.51-15,682.68-7,647.23

Finding the Fourth Proportional to 10,455.51, 15,682.68 and 7,647.23

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Solution

The fourth proportional to 10,455.51, 15,682.68 and 7,647.23 is: 11,470.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,455.51 : 15,682.68 = 7,647.23 : x
  2. Step 2: Convert to fraction form
    10,455.51/15,682.68 = 7,647.23/x
  3. Step 3: Cross multiply
    10,455.51x = 15,682.68 × 7,647.23
  4. Step 4: Simplify right side
    10,455.51x = 119,928,982.56
  5. Step 5: Solve for x
    x = 119,928,982.56/10,455.51
  6. Step 6: Final answer
    x = 11,470.41

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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.