Home / 18,711,212.80-28,066,819.20-13,672,364.80

Finding the Fourth Proportional to 18,711,212.80, 28,066,819.20 and 13,672,364.80

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Solution

The fourth proportional to 18,711,212.80, 28,066,819.20 and 13,672,364.80 is: 20,508,547.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,711,212.80 : 28,066,819.20 = 13,672,364.80 : x
  2. Step 2: Convert to fraction form
    18,711,212.80/28,066,819.20 = 13,672,364.80/x
  3. Step 3: Cross multiply
    18,711,212.80x = 28,066,819.20 × 13,672,364.80
  4. Step 4: Simplify right side
    18,711,212.80x = 383,739,790,878,044.19
  5. Step 5: Solve for x
    x = 383,739,790,878,044.19/18,711,212.80
  6. Step 6: Final answer
    x = 20,508,547.20

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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.