Home / 28,715,748.48-39,627,857.60-15,663,287.76

Finding the Fourth Proportional to 28,715,748.48, 39,627,857.60 and 15,663,287.76

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Solution

The fourth proportional to 28,715,748.48, 39,627,857.60 and 15,663,287.76 is: 21,615,405.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,715,748.48 : 39,627,857.60 = 15,663,287.76 : x
  2. Step 2: Convert to fraction form
    28,715,748.48/39,627,857.60 = 15,663,287.76/x
  3. Step 3: Cross multiply
    28,715,748.48x = 39,627,857.60 × 15,663,287.76
  4. Step 4: Simplify right side
    28,715,748.48x = 620,702,536,901,103
  5. Step 5: Solve for x
    x = 620,702,536,901,103/28,715,748.48
  6. Step 6: Final answer
    x = 21,615,405.13

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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.