Home / 21,372,076.80-29,495,145.60-13,225,939.20

Finding the Fourth Proportional to 21,372,076.80, 29,495,145.60 and 13,225,939.20

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Solution

The fourth proportional to 21,372,076.80, 29,495,145.60 and 13,225,939.20 is: 18,252,835.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,372,076.80 : 29,495,145.60 = 13,225,939.20 : x
  2. Step 2: Convert to fraction form
    21,372,076.80/29,495,145.60 = 13,225,939.20/x
  3. Step 3: Cross multiply
    21,372,076.80x = 29,495,145.60 × 13,225,939.20
  4. Step 4: Simplify right side
    21,372,076.80x = 390,101,002,400,747.50
  5. Step 5: Solve for x
    x = 390,101,002,400,747.50/21,372,076.80
  6. Step 6: Final answer
    x = 18,252,835.51

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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.