Home / 13,673,825.71-18,867,784.70-7,871,486.45

Finding the Fourth Proportional to 13,673,825.71, 18,867,784.70 and 7,871,486.45

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Solution

The fourth proportional to 13,673,825.71, 18,867,784.70 and 7,871,486.45 is: 10,861,445.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,673,825.71 : 18,867,784.70 = 7,871,486.45 : x
  2. Step 2: Convert to fraction form
    13,673,825.71/18,867,784.70 = 7,871,486.45/x
  3. Step 3: Cross multiply
    13,673,825.71x = 18,867,784.70 × 7,871,486.45
  4. Step 4: Simplify right side
    13,673,825.71x = 148,517,511,532,907.12
  5. Step 5: Solve for x
    x = 148,517,511,532,907.12/13,673,825.71
  6. Step 6: Final answer
    x = 10,861,445.41

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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.