Home / 20,742,005.40-31,103,676.90-7,958,261.40

Finding the Fourth Proportional to 20,742,005.40, 31,103,676.90 and 7,958,261.40

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Solution

The fourth proportional to 20,742,005.40, 31,103,676.90 and 7,958,261.40 is: 11,933,811.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,742,005.40 : 31,103,676.90 = 7,958,261.40 : x
  2. Step 2: Convert to fraction form
    20,742,005.40/31,103,676.90 = 7,958,261.40/x
  3. Step 3: Cross multiply
    20,742,005.40x = 31,103,676.90 × 7,958,261.40
  4. Step 4: Simplify right side
    20,742,005.40x = 247,531,191,271,341.66
  5. Step 5: Solve for x
    x = 247,531,191,271,341.66/20,742,005.40
  6. Step 6: Final answer
    x = 11,933,811.92

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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.