Home / 28,723,976.81-39,639,042.78-15,671,236.88

Finding the Fourth Proportional to 28,723,976.81, 39,639,042.78 and 15,671,236.88

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Solution

The fourth proportional to 28,723,976.81, 39,639,042.78 and 15,671,236.88 is: 21,626,282.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,723,976.81 : 39,639,042.78 = 15,671,236.88 : x
  2. Step 2: Convert to fraction form
    28,723,976.81/39,639,042.78 = 15,671,236.88/x
  3. Step 3: Cross multiply
    28,723,976.81x = 39,639,042.78 × 15,671,236.88
  4. Step 4: Simplify right side
    28,723,976.81x = 621,192,829,142,164.12
  5. Step 5: Solve for x
    x = 621,192,829,142,164.12/28,723,976.81
  6. Step 6: Final answer
    x = 21,626,282.23

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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.