Home / 30,921,810.62-46,381,010.07-12,721,399.79

Finding the Fourth Proportional to 30,921,810.62, 46,381,010.07 and 12,721,399.79

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Solution

The fourth proportional to 30,921,810.62, 46,381,010.07 and 12,721,399.79 is: 19,081,397.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,921,810.62 : 46,381,010.07 = 12,721,399.79 : x
  2. Step 2: Convert to fraction form
    30,921,810.62/46,381,010.07 = 12,721,399.79/x
  3. Step 3: Cross multiply
    30,921,810.62x = 46,381,010.07 × 12,721,399.79
  4. Step 4: Simplify right side
    30,921,810.62x = 590,031,371,764,485.88
  5. Step 5: Solve for x
    x = 590,031,371,764,485.88/30,921,810.62
  6. Step 6: Final answer
    x = 19,081,397.88

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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.