Home / 13,720.72-18,934.60-7,433.10

Finding the Fourth Proportional to 13,720.72, 18,934.60 and 7,433.10

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Solution

The fourth proportional to 13,720.72, 18,934.60 and 7,433.10 is: 10,257.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,720.72 : 18,934.60 = 7,433.10 : x
  2. Step 2: Convert to fraction form
    13,720.72/18,934.60 = 7,433.10/x
  3. Step 3: Cross multiply
    13,720.72x = 18,934.60 × 7,433.10
  4. Step 4: Simplify right side
    13,720.72x = 140,742,775.26
  5. Step 5: Solve for x
    x = 140,742,775.26/13,720.72
  6. Step 6: Final answer
    x = 10,257.68

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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.