Home / 20,810,366.13-28,720,004.81-11,992,560.69

Finding the Fourth Proportional to 20,810,366.13, 28,720,004.81 and 11,992,560.69

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Solution

The fourth proportional to 20,810,366.13, 28,720,004.81 and 11,992,560.69 is: 16,550,713.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,810,366.13 : 28,720,004.81 = 11,992,560.69 : x
  2. Step 2: Convert to fraction form
    20,810,366.13/28,720,004.81 = 11,992,560.69/x
  3. Step 3: Cross multiply
    20,810,366.13x = 28,720,004.81 × 11,992,560.69
  4. Step 4: Simplify right side
    20,810,366.13x = 344,426,400,641,054.12
  5. Step 5: Solve for x
    x = 344,426,400,641,054.12/20,810,366.13
  6. Step 6: Final answer
    x = 16,550,713.16

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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.