Home / 20,736,143.40-31,100,067.90-9,953,423.40

Finding the Fourth Proportional to 20,736,143.40, 31,100,067.90 and 9,953,423.40

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Solution

The fourth proportional to 20,736,143.40, 31,100,067.90 and 9,953,423.40 is: 14,928,144.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,736,143.40 : 31,100,067.90 = 9,953,423.40 : x
  2. Step 2: Convert to fraction form
    20,736,143.40/31,100,067.90 = 9,953,423.40/x
  3. Step 3: Cross multiply
    20,736,143.40x = 31,100,067.90 × 9,953,423.40
  4. Step 4: Simplify right side
    20,736,143.40x = 309,552,143,577,448.88
  5. Step 5: Solve for x
    x = 309,552,143,577,448.88/20,736,143.40
  6. Step 6: Final answer
    x = 14,928,144.43

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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.