Home / 20,586.94-28,410-11,155.51

Finding the Fourth Proportional to 20,586.94, 28,410 and 11,155.51

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Solution

The fourth proportional to 20,586.94, 28,410 and 11,155.51 is: 15,394.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,586.94 : 28,410 = 11,155.51 : x
  2. Step 2: Convert to fraction form
    20,586.94/28,410 = 11,155.51/x
  3. Step 3: Cross multiply
    20,586.94x = 28,410 × 11,155.51
  4. Step 4: Simplify right side
    20,586.94x = 316,928,039.10
  5. Step 5: Solve for x
    x = 316,928,039.10/20,586.94
  6. Step 6: Final answer
    x = 15,394.62

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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.