Home / 20,754,881.34-28,639,851.36-11,585,836.86

Finding the Fourth Proportional to 20,754,881.34, 28,639,851.36 and 11,585,836.86

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Solution

The fourth proportional to 20,754,881.34, 28,639,851.36 and 11,585,836.86 is: 15,987,402.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,754,881.34 : 28,639,851.36 = 11,585,836.86 : x
  2. Step 2: Convert to fraction form
    20,754,881.34/28,639,851.36 = 11,585,836.86/x
  3. Step 3: Cross multiply
    20,754,881.34x = 28,639,851.36 × 11,585,836.86
  4. Step 4: Simplify right side
    20,754,881.34x = 331,816,645,551,609.12
  5. Step 5: Solve for x
    x = 331,816,645,551,609.12/20,754,881.34
  6. Step 6: Final answer
    x = 15,987,402.68

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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.