Home / 28,354.68-39,124.62-15,777

Finding the Fourth Proportional to 28,354.68, 39,124.62 and 15,777

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Solution

The fourth proportional to 28,354.68, 39,124.62 and 15,777 is: 21,769.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,354.68 : 39,124.62 = 15,777 : x
  2. Step 2: Convert to fraction form
    28,354.68/39,124.62 = 15,777/x
  3. Step 3: Cross multiply
    28,354.68x = 39,124.62 × 15,777
  4. Step 4: Simplify right side
    28,354.68x = 617,269,129.74
  5. Step 5: Solve for x
    x = 617,269,129.74/28,354.68
  6. Step 6: Final answer
    x = 21,769.57

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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.