Home / 28,128,985.62-42,195,111.39-10,857,284.34

Finding the Fourth Proportional to 28,128,985.62, 42,195,111.39 and 10,857,284.34

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Solution

The fourth proportional to 28,128,985.62, 42,195,111.39 and 10,857,284.34 is: 16,286,556.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,128,985.62 : 42,195,111.39 = 10,857,284.34 : x
  2. Step 2: Convert to fraction form
    28,128,985.62/42,195,111.39 = 10,857,284.34/x
  3. Step 3: Cross multiply
    28,128,985.62x = 42,195,111.39 × 10,857,284.34
  4. Step 4: Simplify right side
    28,128,985.62x = 458,124,322,119,202.62
  5. Step 5: Solve for x
    x = 458,124,322,119,202.62/28,128,985.62
  6. Step 6: Final answer
    x = 16,286,556.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.