Home / 20,421,027.27-28,181,023.52-11,128,599.92

Finding the Fourth Proportional to 20,421,027.27, 28,181,023.52 and 11,128,599.92

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Solution

The fourth proportional to 20,421,027.27, 28,181,023.52 and 11,128,599.92 is: 15,357,471.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,421,027.27 : 28,181,023.52 = 11,128,599.92 : x
  2. Step 2: Convert to fraction form
    20,421,027.27/28,181,023.52 = 11,128,599.92/x
  3. Step 3: Cross multiply
    20,421,027.27x = 28,181,023.52 × 11,128,599.92
  4. Step 4: Simplify right side
    20,421,027.27x = 313,615,336,104,999.69
  5. Step 5: Solve for x
    x = 313,615,336,104,999.69/20,421,027.27
  6. Step 6: Final answer
    x = 15,357,471.10

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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.