Home / 13,511.04-18,645.78-7,845.72

Finding the Fourth Proportional to 13,511.04, 18,645.78 and 7,845.72

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Solution

The fourth proportional to 13,511.04, 18,645.78 and 7,845.72 is: 10,827.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,511.04 : 18,645.78 = 7,845.72 : x
  2. Step 2: Convert to fraction form
    13,511.04/18,645.78 = 7,845.72/x
  3. Step 3: Cross multiply
    13,511.04x = 18,645.78 × 7,845.72
  4. Step 4: Simplify right side
    13,511.04x = 146,289,569.06
  5. Step 5: Solve for x
    x = 146,289,569.06/13,511.04
  6. Step 6: Final answer
    x = 10,827.41

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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.