Home / 28,409.28-39,206.04-15,834

Finding the Fourth Proportional to 28,409.28, 39,206.04 and 15,834

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Solution

The fourth proportional to 28,409.28, 39,206.04 and 15,834 is: 21,851.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,409.28 : 39,206.04 = 15,834 : x
  2. Step 2: Convert to fraction form
    28,409.28/39,206.04 = 15,834/x
  3. Step 3: Cross multiply
    28,409.28x = 39,206.04 × 15,834
  4. Step 4: Simplify right side
    28,409.28x = 620,788,437.36
  5. Step 5: Solve for x
    x = 620,788,437.36/28,409.28
  6. Step 6: Final answer
    x = 21,851.61

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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.