Home / 38,639,405.12-53,323,657.44-21,236,367.20

Finding the Fourth Proportional to 38,639,405.12, 53,323,657.44 and 21,236,367.20

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Solution

The fourth proportional to 38,639,405.12, 53,323,657.44 and 21,236,367.20 is: 29,306,889.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,639,405.12 : 53,323,657.44 = 21,236,367.20 : x
  2. Step 2: Convert to fraction form
    38,639,405.12/53,323,657.44 = 21,236,367.20/x
  3. Step 3: Cross multiply
    38,639,405.12x = 53,323,657.44 × 21,236,367.20
  4. Step 4: Simplify right side
    38,639,405.12x = 1,132,400,769,842,852
  5. Step 5: Solve for x
    x = 1,132,400,769,842,852/38,639,405.12
  6. Step 6: Final answer
    x = 29,306,889.34

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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.