Home / 28,138,605.76-38,832,489.48-15,579,660.25

Finding the Fourth Proportional to 28,138,605.76, 38,832,489.48 and 15,579,660.25

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Solution

The fourth proportional to 28,138,605.76, 38,832,489.48 and 15,579,660.25 is: 21,500,603.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,138,605.76 : 38,832,489.48 = 15,579,660.25 : x
  2. Step 2: Convert to fraction form
    28,138,605.76/38,832,489.48 = 15,579,660.25/x
  3. Step 3: Cross multiply
    28,138,605.76x = 38,832,489.48 × 15,579,660.25
  4. Step 4: Simplify right side
    28,138,605.76x = 604,996,992,760,099.12
  5. Step 5: Solve for x
    x = 604,996,992,760,099.12/28,138,605.76
  6. Step 6: Final answer
    x = 21,500,603.05

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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.