Home / 20,984,079.60-31,476,119.40-12,460,028.40

Finding the Fourth Proportional to 20,984,079.60, 31,476,119.40 and 12,460,028.40

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Solution

The fourth proportional to 20,984,079.60, 31,476,119.40 and 12,460,028.40 is: 18,690,042.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,984,079.60 : 31,476,119.40 = 12,460,028.40 : x
  2. Step 2: Convert to fraction form
    20,984,079.60/31,476,119.40 = 12,460,028.40/x
  3. Step 3: Cross multiply
    20,984,079.60x = 31,476,119.40 × 12,460,028.40
  4. Step 4: Simplify right side
    20,984,079.60x = 392,193,341,645,790.94
  5. Step 5: Solve for x
    x = 392,193,341,645,790.94/20,984,079.60
  6. Step 6: Final answer
    x = 18,690,042.60

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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.