Home / 21,657,791.32-29,887,756.86-12,956,326.36

Finding the Fourth Proportional to 21,657,791.32, 29,887,756.86 and 12,956,326.36

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Solution

The fourth proportional to 21,657,791.32, 29,887,756.86 and 12,956,326.36 is: 17,879,733.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,657,791.32 : 29,887,756.86 = 12,956,326.36 : x
  2. Step 2: Convert to fraction form
    21,657,791.32/29,887,756.86 = 12,956,326.36/x
  3. Step 3: Cross multiply
    21,657,791.32x = 29,887,756.86 × 12,956,326.36
  4. Step 4: Simplify right side
    21,657,791.32x = 387,235,532,046,488.81
  5. Step 5: Solve for x
    x = 387,235,532,046,488.81/21,657,791.32
  6. Step 6: Final answer
    x = 17,879,733.27

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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.