Home / 20,982,342.71-28,954,953.90-12,042,924.32

Finding the Fourth Proportional to 20,982,342.71, 28,954,953.90 and 12,042,924.32

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Solution

The fourth proportional to 20,982,342.71, 28,954,953.90 and 12,042,924.32 is: 16,618,845.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,982,342.71 : 28,954,953.90 = 12,042,924.32 : x
  2. Step 2: Convert to fraction form
    20,982,342.71/28,954,953.90 = 12,042,924.32/x
  3. Step 3: Cross multiply
    20,982,342.71x = 28,954,953.90 × 12,042,924.32
  4. Step 4: Simplify right side
    20,982,342.71x = 348,702,318,579,176.19
  5. Step 5: Solve for x
    x = 348,702,318,579,176.19/20,982,342.71
  6. Step 6: Final answer
    x = 16,618,845.82

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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.