Home / 20,428.06-28,193.57-11,476.25

Finding the Fourth Proportional to 20,428.06, 28,193.57 and 11,476.25

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Solution

The fourth proportional to 20,428.06, 28,193.57 and 11,476.25 is: 15,838.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,428.06 : 28,193.57 = 11,476.25 : x
  2. Step 2: Convert to fraction form
    20,428.06/28,193.57 = 11,476.25/x
  3. Step 3: Cross multiply
    20,428.06x = 28,193.57 × 11,476.25
  4. Step 4: Simplify right side
    20,428.06x = 323,556,457.71
  5. Step 5: Solve for x
    x = 323,556,457.71/20,428.06
  6. Step 6: Final answer
    x = 15,838.82

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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.