Home / 13,420.41-18,519.55-7,452.45

Finding the Fourth Proportional to 13,420.41, 18,519.55 and 7,452.45

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Solution

The fourth proportional to 13,420.41, 18,519.55 and 7,452.45 is: 10,284.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,420.41 : 18,519.55 = 7,452.45 : x
  2. Step 2: Convert to fraction form
    13,420.41/18,519.55 = 7,452.45/x
  3. Step 3: Cross multiply
    13,420.41x = 18,519.55 × 7,452.45
  4. Step 4: Simplify right side
    13,420.41x = 138,016,001.77
  5. Step 5: Solve for x
    x = 138,016,001.77/13,420.41
  6. Step 6: Final answer
    x = 10,284.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.