Home / 13,358.40-18,418.88-10,703.68

Finding the Fourth Proportional to 13,358.40, 18,418.88 and 10,703.68

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Solution

The fourth proportional to 13,358.40, 18,418.88 and 10,703.68 is: 14,758.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,358.40 : 18,418.88 = 10,703.68 : x
  2. Step 2: Convert to fraction form
    13,358.40/18,418.88 = 10,703.68/x
  3. Step 3: Cross multiply
    13,358.40x = 18,418.88 × 10,703.68
  4. Step 4: Simplify right side
    13,358.40x = 197,149,797.48
  5. Step 5: Solve for x
    x = 197,149,797.48/13,358.40
  6. Step 6: Final answer
    x = 14,758.49

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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.