Home / 21,276,858.40-31,919,771.40-6,898,805.20

Finding the Fourth Proportional to 21,276,858.40, 31,919,771.40 and 6,898,805.20

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Solution

The fourth proportional to 21,276,858.40, 31,919,771.40 and 6,898,805.20 is: 10,349,661.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,276,858.40 : 31,919,771.40 = 6,898,805.20 : x
  2. Step 2: Convert to fraction form
    21,276,858.40/31,919,771.40 = 6,898,805.20/x
  3. Step 3: Cross multiply
    21,276,858.40x = 31,919,771.40 × 6,898,805.20
  4. Step 4: Simplify right side
    21,276,858.40x = 220,208,284,917,131.28
  5. Step 5: Solve for x
    x = 220,208,284,917,131.28/21,276,858.40
  6. Step 6: Final answer
    x = 10,349,661.63

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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.