Home / 20,427,806.92-28,190,360.34-11,135,394.76

Finding the Fourth Proportional to 20,427,806.92, 28,190,360.34 and 11,135,394.76

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Solution

The fourth proportional to 20,427,806.92, 28,190,360.34 and 11,135,394.76 is: 15,366,837.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,427,806.92 : 28,190,360.34 = 11,135,394.76 : x
  2. Step 2: Convert to fraction form
    20,427,806.92/28,190,360.34 = 11,135,394.76/x
  3. Step 3: Cross multiply
    20,427,806.92x = 28,190,360.34 × 11,135,394.76
  4. Step 4: Simplify right side
    20,427,806.92x = 313,910,790,812,547.81
  5. Step 5: Solve for x
    x = 313,910,790,812,547.81/20,427,806.92
  6. Step 6: Final answer
    x = 15,366,837.57

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1.5x scale

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.