Home / 21,920,971.96-30,250,998.75-12,132,091.18

Finding the Fourth Proportional to 21,920,971.96, 30,250,998.75 and 12,132,091.18

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Solution

The fourth proportional to 21,920,971.96, 30,250,998.75 and 12,132,091.18 is: 16,742,317.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,920,971.96 : 30,250,998.75 = 12,132,091.18 : x
  2. Step 2: Convert to fraction form
    21,920,971.96/30,250,998.75 = 12,132,091.18/x
  3. Step 3: Cross multiply
    21,920,971.96x = 30,250,998.75 × 12,132,091.18
  4. Step 4: Simplify right side
    21,920,971.96x = 367,007,875,121,066
  5. Step 5: Solve for x
    x = 367,007,875,121,066/21,920,971.96
  6. Step 6: Final answer
    x = 16,742,317.62

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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.