Home / 13,912,937.78-20,859,628.21-6,128,157.50

Finding the Fourth Proportional to 13,912,937.78, 20,859,628.21 and 6,128,157.50

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Solution

The fourth proportional to 13,912,937.78, 20,859,628.21 and 6,128,157.50 is: 9,187,929.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,912,937.78 : 20,859,628.21 = 6,128,157.50 : x
  2. Step 2: Convert to fraction form
    13,912,937.78/20,859,628.21 = 6,128,157.50/x
  3. Step 3: Cross multiply
    13,912,937.78x = 20,859,628.21 × 6,128,157.50
  4. Step 4: Simplify right side
    13,912,937.78x = 127,831,087,134,775.14
  5. Step 5: Solve for x
    x = 127,831,087,134,775.14/13,912,937.78
  6. Step 6: Final answer
    x = 9,187,929.19

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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.