Home / 21,166,866.77-31,740,029.35-12,415,536.05

Finding the Fourth Proportional to 21,166,866.77, 31,740,029.35 and 12,415,536.05

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Solution

The fourth proportional to 21,166,866.77, 31,740,029.35 and 12,415,536.05 is: 18,617,279.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,166,866.77 : 31,740,029.35 = 12,415,536.05 : x
  2. Step 2: Convert to fraction form
    21,166,866.77/31,740,029.35 = 12,415,536.05/x
  3. Step 3: Cross multiply
    21,166,866.77x = 31,740,029.35 × 12,415,536.05
  4. Step 4: Simplify right side
    21,166,866.77x = 394,069,478,433,244.06
  5. Step 5: Solve for x
    x = 394,069,478,433,244.06/21,166,866.77
  6. Step 6: Final answer
    x = 18,617,279.68

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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.