Home / 21,208,427.10-31,782,985.80-11,472,021.66

Finding the Fourth Proportional to 21,208,427.10, 31,782,985.80 and 11,472,021.66

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Solution

The fourth proportional to 21,208,427.10, 31,782,985.80 and 11,472,021.66 is: 17,191,991.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,208,427.10 : 31,782,985.80 = 11,472,021.66 : x
  2. Step 2: Convert to fraction form
    21,208,427.10/31,782,985.80 = 11,472,021.66/x
  3. Step 3: Cross multiply
    21,208,427.10x = 31,782,985.80 × 11,472,021.66
  4. Step 4: Simplify right side
    21,208,427.10x = 364,615,101,517,072.44
  5. Step 5: Solve for x
    x = 364,615,101,517,072.44/21,208,427.10
  6. Step 6: Final answer
    x = 17,191,991.65

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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.