Home / 21,315,168.51-31,959,006.20-8,362,628.22

Finding the Fourth Proportional to 21,315,168.51, 31,959,006.20 and 8,362,628.22

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Solution

The fourth proportional to 21,315,168.51, 31,959,006.20 and 8,362,628.22 is: 12,538,549.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,315,168.51 : 31,959,006.20 = 8,362,628.22 : x
  2. Step 2: Convert to fraction form
    21,315,168.51/31,959,006.20 = 8,362,628.22/x
  3. Step 3: Cross multiply
    21,315,168.51x = 31,959,006.20 × 8,362,628.22
  4. Step 4: Simplify right side
    21,315,168.51x = 267,261,287,049,451.34
  5. Step 5: Solve for x
    x = 267,261,287,049,451.34/21,315,168.51
  6. Step 6: Final answer
    x = 12,538,549.11

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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.