Home / 20,421,030.11-28,181,027.42-11,128,602.73

Finding the Fourth Proportional to 20,421,030.11, 28,181,027.42 and 11,128,602.73

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Solution

The fourth proportional to 20,421,030.11, 28,181,027.42 and 11,128,602.73 is: 15,357,474.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,421,030.11 : 28,181,027.42 = 11,128,602.73 : x
  2. Step 2: Convert to fraction form
    20,421,030.11/28,181,027.42 = 11,128,602.73/x
  3. Step 3: Cross multiply
    20,421,030.11x = 28,181,027.42 × 11,128,602.73
  4. Step 4: Simplify right side
    20,421,030.11x = 313,615,458,728,166.19
  5. Step 5: Solve for x
    x = 313,615,458,728,166.19/20,421,030.11
  6. Step 6: Final answer
    x = 15,357,474.97

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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.