Home / 13,540,651.28-20,170,242.90-12,807,248.12

Finding the Fourth Proportional to 13,540,651.28, 20,170,242.90 and 12,807,248.12

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Solution

The fourth proportional to 13,540,651.28, 20,170,242.90 and 12,807,248.12 is: 19,077,760.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,540,651.28 : 20,170,242.90 = 12,807,248.12 : x
  2. Step 2: Convert to fraction form
    13,540,651.28/20,170,242.90 = 12,807,248.12/x
  3. Step 3: Cross multiply
    13,540,651.28x = 20,170,242.90 × 12,807,248.12
  4. Step 4: Simplify right side
    13,540,651.28x = 258,325,305,460,968.31
  5. Step 5: Solve for x
    x = 258,325,305,460,968.31/13,540,651.28
  6. Step 6: Final answer
    x = 19,077,760.75

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.