Home / 13,745.32-18,968.58-7,457.68

Finding the Fourth Proportional to 13,745.32, 18,968.58 and 7,457.68

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Solution

The fourth proportional to 13,745.32, 18,968.58 and 7,457.68 is: 10,291.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,745.32 : 18,968.58 = 7,457.68 : x
  2. Step 2: Convert to fraction form
    13,745.32/18,968.58 = 7,457.68/x
  3. Step 3: Cross multiply
    13,745.32x = 18,968.58 × 7,457.68
  4. Step 4: Simplify right side
    13,745.32x = 141,461,599.69
  5. Step 5: Solve for x
    x = 141,461,599.69/13,745.32
  6. Step 6: Final answer
    x = 10,291.62

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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.