Home / 13,390.34-20,116.28-9,450.68

Finding the Fourth Proportional to 13,390.34, 20,116.28 and 9,450.68

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Solution

The fourth proportional to 13,390.34, 20,116.28 and 9,450.68 is: 14,197.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,390.34 : 20,116.28 = 9,450.68 : x
  2. Step 2: Convert to fraction form
    13,390.34/20,116.28 = 9,450.68/x
  3. Step 3: Cross multiply
    13,390.34x = 20,116.28 × 9,450.68
  4. Step 4: Simplify right side
    13,390.34x = 190,112,448.12
  5. Step 5: Solve for x
    x = 190,112,448.12/13,390.34
  6. Step 6: Final answer
    x = 14,197.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.