Home / 10,401,422.40-15,571,720.80-7,415,438.40

Finding the Fourth Proportional to 10,401,422.40, 15,571,720.80 and 7,415,438.40

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Solution

The fourth proportional to 10,401,422.40, 15,571,720.80 and 7,415,438.40 is: 11,101,475.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,401,422.40 : 15,571,720.80 = 7,415,438.40 : x
  2. Step 2: Convert to fraction form
    10,401,422.40/15,571,720.80 = 7,415,438.40/x
  3. Step 3: Cross multiply
    10,401,422.40x = 15,571,720.80 × 7,415,438.40
  4. Step 4: Simplify right side
    10,401,422.40x = 115,471,136,374,398.73
  5. Step 5: Solve for x
    x = 115,471,136,374,398.73/10,401,422.40
  6. Step 6: Final answer
    x = 11,101,475.54

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.