Home / 28,820,421.12-39,765,669.60-17,215,713.12

Finding the Fourth Proportional to 28,820,421.12, 39,765,669.60 and 17,215,713.12

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Solution

The fourth proportional to 28,820,421.12, 39,765,669.60 and 17,215,713.12 is: 23,753,794.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,820,421.12 : 39,765,669.60 = 17,215,713.12 : x
  2. Step 2: Convert to fraction form
    28,820,421.12/39,765,669.60 = 17,215,713.12/x
  3. Step 3: Cross multiply
    28,820,421.12x = 39,765,669.60 × 17,215,713.12
  4. Step 4: Simplify right side
    28,820,421.12x = 684,594,359,858,305.25
  5. Step 5: Solve for x
    x = 684,594,359,858,305.25/28,820,421.12
  6. Step 6: Final answer
    x = 23,753,794.47

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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.