Home / 13,198,448.39-18,215,735.76-7,319,390.13

Finding the Fourth Proportional to 13,198,448.39, 18,215,735.76 and 7,319,390.13

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Solution

The fourth proportional to 13,198,448.39, 18,215,735.76 and 7,319,390.13 is: 10,101,799.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,198,448.39 : 18,215,735.76 = 7,319,390.13 : x
  2. Step 2: Convert to fraction form
    13,198,448.39/18,215,735.76 = 7,319,390.13/x
  3. Step 3: Cross multiply
    13,198,448.39x = 18,215,735.76 × 7,319,390.13
  4. Step 4: Simplify right side
    13,198,448.39x = 133,328,076,532,432.06
  5. Step 5: Solve for x
    x = 133,328,076,532,432.06/13,198,448.39
  6. Step 6: Final answer
    x = 10,101,799.29

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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.