Home / 20,817,939.22-28,730,903.09-11,997,700.18

Finding the Fourth Proportional to 20,817,939.22, 28,730,903.09 and 11,997,700.18

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Solution

The fourth proportional to 20,817,939.22, 28,730,903.09 and 11,997,700.18 is: 16,558,063.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,817,939.22 : 28,730,903.09 = 11,997,700.18 : x
  2. Step 2: Convert to fraction form
    20,817,939.22/28,730,903.09 = 11,997,700.18/x
  3. Step 3: Cross multiply
    20,817,939.22x = 28,730,903.09 × 11,997,700.18
  4. Step 4: Simplify right side
    20,817,939.22x = 344,704,761,042,639.81
  5. Step 5: Solve for x
    x = 344,704,761,042,639.81/20,817,939.22
  6. Step 6: Final answer
    x = 16,558,063.57

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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.