Home / 12,921,359.10-19,363,751.68-7,166,625.81

Finding the Fourth Proportional to 12,921,359.10, 19,363,751.68 and 7,166,625.81

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Solution

The fourth proportional to 12,921,359.10, 19,363,751.68 and 7,166,625.81 is: 10,739,796.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,921,359.10 : 19,363,751.68 = 7,166,625.81 : x
  2. Step 2: Convert to fraction form
    12,921,359.10/19,363,751.68 = 7,166,625.81/x
  3. Step 3: Cross multiply
    12,921,359.10x = 19,363,751.68 × 7,166,625.81
  4. Step 4: Simplify right side
    12,921,359.10x = 138,772,762,471,500.09
  5. Step 5: Solve for x
    x = 138,772,762,471,500.09/12,921,359.10
  6. Step 6: Final answer
    x = 10,739,796.14

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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.