Home / 20,723.99-28,598.21-11,771.47

Finding the Fourth Proportional to 20,723.99, 28,598.21 and 11,771.47

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Solution

The fourth proportional to 20,723.99, 28,598.21 and 11,771.47 is: 16,244.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,723.99 : 28,598.21 = 11,771.47 : x
  2. Step 2: Convert to fraction form
    20,723.99/28,598.21 = 11,771.47/x
  3. Step 3: Cross multiply
    20,723.99x = 28,598.21 × 11,771.47
  4. Step 4: Simplify right side
    20,723.99x = 336,642,828.08
  5. Step 5: Solve for x
    x = 336,642,828.08/20,723.99
  6. Step 6: Final answer
    x = 16,244.11

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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.