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Finding the Fourth Proportional to 27,598,352.88, 38,085,978.87 and 15,208,890.85

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Solution

The fourth proportional to 27,598,352.88, 38,085,978.87 and 15,208,890.85 is: 20,988,408.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,598,352.88 : 38,085,978.87 = 15,208,890.85 : x
  2. Step 2: Convert to fraction form
    27,598,352.88/38,085,978.87 = 15,208,890.85/x
  3. Step 3: Cross multiply
    27,598,352.88x = 38,085,978.87 × 15,208,890.85
  4. Step 4: Simplify right side
    27,598,352.88x = 579,245,495,549,236.25
  5. Step 5: Solve for x
    x = 579,245,495,549,236.25/27,598,352.88
  6. Step 6: Final answer
    x = 20,988,408.19

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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.