Home / 12,871,512.89-17,748,131.69-8,219,180.69

Finding the Fourth Proportional to 12,871,512.89, 17,748,131.69 and 8,219,180.69

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Solution

The fourth proportional to 12,871,512.89, 17,748,131.69 and 8,219,180.69 is: 11,333,174.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,871,512.89 : 17,748,131.69 = 8,219,180.69 : x
  2. Step 2: Convert to fraction form
    12,871,512.89/17,748,131.69 = 8,219,180.69/x
  3. Step 3: Cross multiply
    12,871,512.89x = 17,748,131.69 × 8,219,180.69
  4. Step 4: Simplify right side
    12,871,512.89x = 145,875,101,140,188.50
  5. Step 5: Solve for x
    x = 145,875,101,140,188.50/12,871,512.89
  6. Step 6: Final answer
    x = 11,333,174.46

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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.