Home / 18,931,556.52-28,410,112.25-7,415,595.31

Finding the Fourth Proportional to 18,931,556.52, 28,410,112.25 and 7,415,595.31

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Solution

The fourth proportional to 18,931,556.52, 28,410,112.25 and 7,415,595.31 is: 11,128,397.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,931,556.52 : 28,410,112.25 = 7,415,595.31 : x
  2. Step 2: Convert to fraction form
    18,931,556.52/28,410,112.25 = 7,415,595.31/x
  3. Step 3: Cross multiply
    18,931,556.52x = 28,410,112.25 × 7,415,595.31
  4. Step 4: Simplify right side
    18,931,556.52x = 210,677,895,151,500.38
  5. Step 5: Solve for x
    x = 210,677,895,151,500.38/18,931,556.52
  6. Step 6: Final answer
    x = 11,128,397.97

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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.