Home / 20,428.99-28,187.61-11,927.24

Finding the Fourth Proportional to 20,428.99, 28,187.61 and 11,927.24

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Solution

The fourth proportional to 20,428.99, 28,187.61 and 11,927.24 is: 16,457.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,428.99 : 28,187.61 = 11,927.24 : x
  2. Step 2: Convert to fraction form
    20,428.99/28,187.61 = 11,927.24/x
  3. Step 3: Cross multiply
    20,428.99x = 28,187.61 × 11,927.24
  4. Step 4: Simplify right side
    20,428.99x = 336,200,389.50
  5. Step 5: Solve for x
    x = 336,200,389.50/20,428.99
  6. Step 6: Final answer
    x = 16,457.03

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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.