Home / 13,470.03-18,587.39-7,805

Finding the Fourth Proportional to 13,470.03, 18,587.39 and 7,805

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Solution

The fourth proportional to 13,470.03, 18,587.39 and 7,805 is: 10,770.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,470.03 : 18,587.39 = 7,805 : x
  2. Step 2: Convert to fraction form
    13,470.03/18,587.39 = 7,805/x
  3. Step 3: Cross multiply
    13,470.03x = 18,587.39 × 7,805
  4. Step 4: Simplify right side
    13,470.03x = 145,074,578.95
  5. Step 5: Solve for x
    x = 145,074,578.95/13,470.03
  6. Step 6: Final answer
    x = 10,770.17

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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.