Home / 13,745.04-18,967.60-7,457.28

Finding the Fourth Proportional to 13,745.04, 18,967.60 and 7,457.28

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Solution

The fourth proportional to 13,745.04, 18,967.60 and 7,457.28 is: 10,290.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,745.04 : 18,967.60 = 7,457.28 : x
  2. Step 2: Convert to fraction form
    13,745.04/18,967.60 = 7,457.28/x
  3. Step 3: Cross multiply
    13,745.04x = 18,967.60 × 7,457.28
  4. Step 4: Simplify right side
    13,745.04x = 141,446,704.13
  5. Step 5: Solve for x
    x = 141,446,704.13/13,745.04
  6. Step 6: Final answer
    x = 10,290.75

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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.