Home / 20,985,922.60-28,960,632.13-12,167,087.68

Finding the Fourth Proportional to 20,985,922.60, 28,960,632.13 and 12,167,087.68

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Solution

The fourth proportional to 20,985,922.60, 28,960,632.13 and 12,167,087.68 is: 16,790,615.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,985,922.60 : 28,960,632.13 = 12,167,087.68 : x
  2. Step 2: Convert to fraction form
    20,985,922.60/28,960,632.13 = 12,167,087.68/x
  3. Step 3: Cross multiply
    20,985,922.60x = 28,960,632.13 × 12,167,087.68
  4. Step 4: Simplify right side
    20,985,922.60x = 352,366,550,393,935.12
  5. Step 5: Solve for x
    x = 352,366,550,393,935.12/20,985,922.60
  6. Step 6: Final answer
    x = 16,790,615.17

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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.