Home / 12,921,047.20-17,831,425.48-7,120,202.62

Finding the Fourth Proportional to 12,921,047.20, 17,831,425.48 and 7,120,202.62

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Solution

The fourth proportional to 12,921,047.20, 17,831,425.48 and 7,120,202.62 is: 9,826,089.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,921,047.20 : 17,831,425.48 = 7,120,202.62 : x
  2. Step 2: Convert to fraction form
    12,921,047.20/17,831,425.48 = 7,120,202.62/x
  3. Step 3: Cross multiply
    12,921,047.20x = 17,831,425.48 × 7,120,202.62
  4. Step 4: Simplify right side
    12,921,047.20x = 126,963,362,421,030.77
  5. Step 5: Solve for x
    x = 126,963,362,421,030.77/12,921,047.20
  6. Step 6: Final answer
    x = 9,826,089.21

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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.