Home / 20,688,516.44-30,984,943.58-19,971,071.08

Finding the Fourth Proportional to 20,688,516.44, 30,984,943.58 and 19,971,071.08

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Solution

The fourth proportional to 20,688,516.44, 30,984,943.58 and 19,971,071.08 is: 29,910,434.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,688,516.44 : 30,984,943.58 = 19,971,071.08 : x
  2. Step 2: Convert to fraction form
    20,688,516.44/30,984,943.58 = 19,971,071.08/x
  3. Step 3: Cross multiply
    20,688,516.44x = 30,984,943.58 × 19,971,071.08
  4. Step 4: Simplify right side
    20,688,516.44x = 618,802,510,645,969.62
  5. Step 5: Solve for x
    x = 618,802,510,645,969.62/20,688,516.44
  6. Step 6: Final answer
    x = 29,910,434.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.