Home / 20,954,642.11-31,431,971.90-9,426,644.28

Finding the Fourth Proportional to 20,954,642.11, 31,431,971.90 and 9,426,644.28

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Solution

The fourth proportional to 20,954,642.11, 31,431,971.90 and 9,426,644.28 is: 14,139,970.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,954,642.11 : 31,431,971.90 = 9,426,644.28 : x
  2. Step 2: Convert to fraction form
    20,954,642.11/31,431,971.90 = 9,426,644.28/x
  3. Step 3: Cross multiply
    20,954,642.11x = 31,431,971.90 × 9,426,644.28
  4. Step 4: Simplify right side
    20,954,642.11x = 296,298,018,143,822.31
  5. Step 5: Solve for x
    x = 296,298,018,143,822.31/20,954,642.11
  6. Step 6: Final answer
    x = 14,139,970.35

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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.