Home / 20,678,938.06-31,004,042.94-9,158,127.34

Finding the Fourth Proportional to 20,678,938.06, 31,004,042.94 and 9,158,127.34

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Solution

The fourth proportional to 20,678,938.06, 31,004,042.94 and 9,158,127.34 is: 13,730,829.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,678,938.06 : 31,004,042.94 = 9,158,127.34 : x
  2. Step 2: Convert to fraction form
    20,678,938.06/31,004,042.94 = 9,158,127.34/x
  3. Step 3: Cross multiply
    20,678,938.06x = 31,004,042.94 × 9,158,127.34
  4. Step 4: Simplify right side
    20,678,938.06x = 283,938,973,299,348
  5. Step 5: Solve for x
    x = 283,938,973,299,348/20,678,938.06
  6. Step 6: Final answer
    x = 13,730,829.53

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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.