Home / 20,947,946.76-28,907,712.63-12,127,769.69

Finding the Fourth Proportional to 20,947,946.76, 28,907,712.63 and 12,127,769.69

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Solution

The fourth proportional to 20,947,946.76, 28,907,712.63 and 12,127,769.69 is: 16,736,059.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,947,946.76 : 28,907,712.63 = 12,127,769.69 : x
  2. Step 2: Convert to fraction form
    20,947,946.76/28,907,712.63 = 12,127,769.69/x
  3. Step 3: Cross multiply
    20,947,946.76x = 28,907,712.63 × 12,127,769.69
  4. Step 4: Simplify right side
    20,947,946.76x = 350,586,080,896,805.62
  5. Step 5: Solve for x
    x = 350,586,080,896,805.62/20,947,946.76
  6. Step 6: Final answer
    x = 16,736,059.38

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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.