Home / 20,421,499.19-28,181,669.46-11,254,141.94

Finding the Fourth Proportional to 20,421,499.19, 28,181,669.46 and 11,254,141.94

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Solution

The fourth proportional to 20,421,499.19, 28,181,669.46 and 11,254,141.94 is: 15,530,716.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,421,499.19 : 28,181,669.46 = 11,254,141.94 : x
  2. Step 2: Convert to fraction form
    20,421,499.19/28,181,669.46 = 11,254,141.94/x
  3. Step 3: Cross multiply
    20,421,499.19x = 28,181,669.46 × 11,254,141.94
  4. Step 4: Simplify right side
    20,421,499.19x = 317,160,508,068,094.81
  5. Step 5: Solve for x
    x = 317,160,508,068,094.81/20,421,499.19
  6. Step 6: Final answer
    x = 15,530,716.19

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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.