Home / 15,853,862-21,877,597.40-8,978,393.28

Finding the Fourth Proportional to 15,853,862, 21,877,597.40 and 8,978,393.28

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Solution

The fourth proportional to 15,853,862, 21,877,597.40 and 8,978,393.28 is: 12,389,768.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,853,862 : 21,877,597.40 = 8,978,393.28 : x
  2. Step 2: Convert to fraction form
    15,853,862/21,877,597.40 = 8,978,393.28/x
  3. Step 3: Cross multiply
    15,853,862x = 21,877,597.40 × 8,978,393.28
  4. Step 4: Simplify right side
    15,853,862x = 196,425,673,478,705.44
  5. Step 5: Solve for x
    x = 196,425,673,478,705.44/15,853,862
  6. Step 6: Final answer
    x = 12,389,768.09

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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.