Home / 20,509.11-30,762.23-11,716.47

Finding the Fourth Proportional to 20,509.11, 30,762.23 and 11,716.47

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Solution

The fourth proportional to 20,509.11, 30,762.23 and 11,716.47 is: 17,573.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,509.11 : 30,762.23 = 11,716.47 : x
  2. Step 2: Convert to fraction form
    20,509.11/30,762.23 = 11,716.47/x
  3. Step 3: Cross multiply
    20,509.11x = 30,762.23 × 11,716.47
  4. Step 4: Simplify right side
    20,509.11x = 360,424,686.35
  5. Step 5: Solve for x
    x = 360,424,686.35/20,509.11
  6. Step 6: Final answer
    x = 17,573.88

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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.