Home / 11,422.14-15,762.84-6,386.90

Finding the Fourth Proportional to 11,422.14, 15,762.84 and 6,386.90

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Solution

The fourth proportional to 11,422.14, 15,762.84 and 6,386.90 is: 8,814.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,422.14 : 15,762.84 = 6,386.90 : x
  2. Step 2: Convert to fraction form
    11,422.14/15,762.84 = 6,386.90/x
  3. Step 3: Cross multiply
    11,422.14x = 15,762.84 × 6,386.90
  4. Step 4: Simplify right side
    11,422.14x = 100,675,682.80
  5. Step 5: Solve for x
    x = 100,675,682.80/11,422.14
  6. Step 6: Final answer
    x = 8,814.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.