Home / 20,783,991.86-28,681,459.92-11,491,204.76

Finding the Fourth Proportional to 20,783,991.86, 28,681,459.92 and 11,491,204.76

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Solution

The fourth proportional to 20,783,991.86, 28,681,459.92 and 11,491,204.76 is: 15,857,614.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,783,991.86 : 28,681,459.92 = 11,491,204.76 : x
  2. Step 2: Convert to fraction form
    20,783,991.86/28,681,459.92 = 11,491,204.76/x
  3. Step 3: Cross multiply
    20,783,991.86x = 28,681,459.92 × 11,491,204.76
  4. Step 4: Simplify right side
    20,783,991.86x = 329,584,528,613,045.94
  5. Step 5: Solve for x
    x = 329,584,528,613,045.94/20,783,991.86
  6. Step 6: Final answer
    x = 15,857,614.40

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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.