Home / 20,958,059.10-31,374,103.05-12,434,007.90

Finding the Fourth Proportional to 20,958,059.10, 31,374,103.05 and 12,434,007.90

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Solution

The fourth proportional to 20,958,059.10, 31,374,103.05 and 12,434,007.90 is: 18,613,643.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,958,059.10 : 31,374,103.05 = 12,434,007.90 : x
  2. Step 2: Convert to fraction form
    20,958,059.10/31,374,103.05 = 12,434,007.90/x
  3. Step 3: Cross multiply
    20,958,059.10x = 31,374,103.05 × 12,434,007.90
  4. Step 4: Simplify right side
    20,958,059.10x = 390,105,845,179,114.12
  5. Step 5: Solve for x
    x = 390,105,845,179,114.12/20,958,059.10
  6. Step 6: Final answer
    x = 18,613,643.72

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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.