Home / 21,045,406.40-31,568,109.60-9,707,998.40

Finding the Fourth Proportional to 21,045,406.40, 31,568,109.60 and 9,707,998.40

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Solution

The fourth proportional to 21,045,406.40, 31,568,109.60 and 9,707,998.40 is: 14,561,997.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,045,406.40 : 31,568,109.60 = 9,707,998.40 : x
  2. Step 2: Convert to fraction form
    21,045,406.40/31,568,109.60 = 9,707,998.40/x
  3. Step 3: Cross multiply
    21,045,406.40x = 31,568,109.60 × 9,707,998.40
  4. Step 4: Simplify right side
    21,045,406.40x = 306,463,157,487,824.69
  5. Step 5: Solve for x
    x = 306,463,157,487,824.69/21,045,406.40
  6. Step 6: Final answer
    x = 14,561,997.60

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Similar ratio
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1.5x scale

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.