Home / 21,296,947.20-31,945,420.80-7,832,025.60

Finding the Fourth Proportional to 21,296,947.20, 31,945,420.80 and 7,832,025.60

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Solution

The fourth proportional to 21,296,947.20, 31,945,420.80 and 7,832,025.60 is: 11,748,038.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,296,947.20 : 31,945,420.80 = 7,832,025.60 : x
  2. Step 2: Convert to fraction form
    21,296,947.20/31,945,420.80 = 7,832,025.60/x
  3. Step 3: Cross multiply
    21,296,947.20x = 31,945,420.80 × 7,832,025.60
  4. Step 4: Simplify right side
    21,296,947.20x = 250,197,353,508,372.47
  5. Step 5: Solve for x
    x = 250,197,353,508,372.47/21,296,947.20
  6. Step 6: Final answer
    x = 11,748,038.40

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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.