Home / 18,939,892.77-26,123,489.73-12,312,117.68

Finding the Fourth Proportional to 18,939,892.77, 26,123,489.73 and 12,312,117.68

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Solution

The fourth proportional to 18,939,892.77, 26,123,489.73 and 12,312,117.68 is: 16,981,906.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,939,892.77 : 26,123,489.73 = 12,312,117.68 : x
  2. Step 2: Convert to fraction form
    18,939,892.77/26,123,489.73 = 12,312,117.68/x
  3. Step 3: Cross multiply
    18,939,892.77x = 26,123,489.73 × 12,312,117.68
  4. Step 4: Simplify right side
    18,939,892.77x = 321,635,479,637,414
  5. Step 5: Solve for x
    x = 321,635,479,637,414/18,939,892.77
  6. Step 6: Final answer
    x = 16,981,906.05

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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.