Home / 20,915,856.09-28,864,582.29-11,623,817.79

Finding the Fourth Proportional to 20,915,856.09, 28,864,582.29 and 11,623,817.79

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Solution

The fourth proportional to 20,915,856.09, 28,864,582.29 and 11,623,817.79 is: 16,041,258.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,915,856.09 : 28,864,582.29 = 11,623,817.79 : x
  2. Step 2: Convert to fraction form
    20,915,856.09/28,864,582.29 = 11,623,817.79/x
  3. Step 3: Cross multiply
    20,915,856.09x = 28,864,582.29 × 11,623,817.79
  4. Step 4: Simplify right side
    20,915,856.09x = 335,516,645,123,420.88
  5. Step 5: Solve for x
    x = 335,516,645,123,420.88/20,915,856.09
  6. Step 6: Final answer
    x = 16,041,258.06

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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.