Home / 20,678,954.05-31,004,066.94-9,158,143.33

Finding the Fourth Proportional to 20,678,954.05, 31,004,066.94 and 9,158,143.33

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Solution

The fourth proportional to 20,678,954.05, 31,004,066.94 and 9,158,143.33 is: 13,730,853.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,678,954.05 : 31,004,066.94 = 9,158,143.33 : x
  2. Step 2: Convert to fraction form
    20,678,954.05/31,004,066.94 = 9,158,143.33/x
  3. Step 3: Cross multiply
    20,678,954.05x = 31,004,066.94 × 9,158,143.33
  4. Step 4: Simplify right side
    20,678,954.05x = 283,939,688,849,434.50
  5. Step 5: Solve for x
    x = 283,939,688,849,434.50/20,678,954.05
  6. Step 6: Final answer
    x = 13,730,853.51

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