Home / 13,368.92-18,449.20-7,400.68

Finding the Fourth Proportional to 13,368.92, 18,449.20 and 7,400.68

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Solution

The fourth proportional to 13,368.92, 18,449.20 and 7,400.68 is: 10,212.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,368.92 : 18,449.20 = 7,400.68 : x
  2. Step 2: Convert to fraction form
    13,368.92/18,449.20 = 7,400.68/x
  3. Step 3: Cross multiply
    13,368.92x = 18,449.20 × 7,400.68
  4. Step 4: Simplify right side
    13,368.92x = 136,536,588.58
  5. Step 5: Solve for x
    x = 136,536,588.58/13,368.92
  6. Step 6: Final answer
    x = 10,212.99

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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.