Home / 21,898,963.40-30,219,971.13-12,109,072.84

Finding the Fourth Proportional to 21,898,963.40, 30,219,971.13 and 12,109,072.84

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Solution

The fourth proportional to 21,898,963.40, 30,219,971.13 and 12,109,072.84 is: 16,710,189.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,898,963.40 : 30,219,971.13 = 12,109,072.84 : x
  2. Step 2: Convert to fraction form
    21,898,963.40/30,219,971.13 = 12,109,072.84/x
  3. Step 3: Cross multiply
    21,898,963.40x = 30,219,971.13 × 12,109,072.84
  4. Step 4: Simplify right side
    21,898,963.40x = 365,935,831,551,718.25
  5. Step 5: Solve for x
    x = 365,935,831,551,718.25/21,898,963.40
  6. Step 6: Final answer
    x = 16,710,189.65

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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.