Home / 20,739,679.40-31,109,519.10-13,172,076.20

Finding the Fourth Proportional to 20,739,679.40, 31,109,519.10 and 13,172,076.20

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Solution

The fourth proportional to 20,739,679.40, 31,109,519.10 and 13,172,076.20 is: 19,758,114.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,739,679.40 : 31,109,519.10 = 13,172,076.20 : x
  2. Step 2: Convert to fraction form
    20,739,679.40/31,109,519.10 = 13,172,076.20/x
  3. Step 3: Cross multiply
    20,739,679.40x = 31,109,519.10 × 13,172,076.20
  4. Step 4: Simplify right side
    20,739,679.40x = 409,776,956,130,555.44
  5. Step 5: Solve for x
    x = 409,776,956,130,555.44/20,739,679.40
  6. Step 6: Final answer
    x = 19,758,114.30

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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.