Home / 21,212,642.64-31,805,941.92-8,243,650.46

Finding the Fourth Proportional to 21,212,642.64, 31,805,941.92 and 8,243,650.46

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Solution

The fourth proportional to 21,212,642.64, 31,805,941.92 and 8,243,650.46 is: 12,360,415.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,212,642.64 : 31,805,941.92 = 8,243,650.46 : x
  2. Step 2: Convert to fraction form
    21,212,642.64/31,805,941.92 = 8,243,650.46/x
  3. Step 3: Cross multiply
    21,212,642.64x = 31,805,941.92 × 8,243,650.46
  4. Step 4: Simplify right side
    21,212,642.64x = 262,197,067,680,635.53
  5. Step 5: Solve for x
    x = 262,197,067,680,635.53/21,212,642.64
  6. Step 6: Final answer
    x = 12,360,415.07

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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.