Home / 15,428,212.61-21,290,820.85-8,458,775.21

Finding the Fourth Proportional to 15,428,212.61, 21,290,820.85 and 8,458,775.21

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Solution

The fourth proportional to 15,428,212.61, 21,290,820.85 and 8,458,775.21 is: 11,673,048.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,428,212.61 : 21,290,820.85 = 8,458,775.21 : x
  2. Step 2: Convert to fraction form
    15,428,212.61/21,290,820.85 = 8,458,775.21/x
  3. Step 3: Cross multiply
    15,428,212.61x = 21,290,820.85 × 8,458,775.21
  4. Step 4: Simplify right side
    15,428,212.61x = 180,094,267,478,930.09
  5. Step 5: Solve for x
    x = 180,094,267,478,930.09/15,428,212.61
  6. Step 6: Final answer
    x = 11,673,048.08

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.