Home / 21,043,557.60-31,541,725.90-13,771,009.86

Finding the Fourth Proportional to 21,043,557.60, 31,541,725.90 and 13,771,009.86

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Solution

The fourth proportional to 21,043,557.60, 31,541,725.90 and 13,771,009.86 is: 20,641,063.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,043,557.60 : 31,541,725.90 = 13,771,009.86 : x
  2. Step 2: Convert to fraction form
    21,043,557.60/31,541,725.90 = 13,771,009.86/x
  3. Step 3: Cross multiply
    21,043,557.60x = 31,541,725.90 × 13,771,009.86
  4. Step 4: Simplify right side
    21,043,557.60x = 434,361,418,370,317.31
  5. Step 5: Solve for x
    x = 434,361,418,370,317.31/21,043,557.60
  6. Step 6: Final answer
    x = 20,641,063.96

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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.