Home / 15,517,939.29-21,415,419.95-8,642,420.25

Finding the Fourth Proportional to 15,517,939.29, 21,415,419.95 and 8,642,420.25

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Solution

The fourth proportional to 15,517,939.29, 21,415,419.95 and 8,642,420.25 is: 11,926,909.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,517,939.29 : 21,415,419.95 = 8,642,420.25 : x
  2. Step 2: Convert to fraction form
    15,517,939.29/21,415,419.95 = 8,642,420.25/x
  3. Step 3: Cross multiply
    15,517,939.29x = 21,415,419.95 × 8,642,420.25
  4. Step 4: Simplify right side
    15,517,939.29x = 185,081,058,994,921.88
  5. Step 5: Solve for x
    x = 185,081,058,994,921.88/15,517,939.29
  6. Step 6: Final answer
    x = 11,926,909.59

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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.