Home / 11,421.87-17,130.43-4,399.47

Finding the Fourth Proportional to 11,421.87, 17,130.43 and 4,399.47

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Solution

The fourth proportional to 11,421.87, 17,130.43 and 4,399.47 is: 6,598.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,421.87 : 17,130.43 = 4,399.47 : x
  2. Step 2: Convert to fraction form
    11,421.87/17,130.43 = 4,399.47/x
  3. Step 3: Cross multiply
    11,421.87x = 17,130.43 × 4,399.47
  4. Step 4: Simplify right side
    11,421.87x = 75,364,818.37
  5. Step 5: Solve for x
    x = 75,364,818.37/11,421.87
  6. Step 6: Final answer
    x = 6,598.29

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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.