Home / 13,281.89-18,329.07-7,616.85

Finding the Fourth Proportional to 13,281.89, 18,329.07 and 7,616.85

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Solution

The fourth proportional to 13,281.89, 18,329.07 and 7,616.85 is: 10,511.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,281.89 : 18,329.07 = 7,616.85 : x
  2. Step 2: Convert to fraction form
    13,281.89/18,329.07 = 7,616.85/x
  3. Step 3: Cross multiply
    13,281.89x = 18,329.07 × 7,616.85
  4. Step 4: Simplify right side
    13,281.89x = 139,609,693.81
  5. Step 5: Solve for x
    x = 139,609,693.81/13,281.89
  6. Step 6: Final answer
    x = 10,511.29

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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.