Home / 13,358.64-18,434.60-7,390.34

Finding the Fourth Proportional to 13,358.64, 18,434.60 and 7,390.34

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Solution

The fourth proportional to 13,358.64, 18,434.60 and 7,390.34 is: 10,198.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,358.64 : 18,434.60 = 7,390.34 : x
  2. Step 2: Convert to fraction form
    13,358.64/18,434.60 = 7,390.34/x
  3. Step 3: Cross multiply
    13,358.64x = 18,434.60 × 7,390.34
  4. Step 4: Simplify right side
    13,358.64x = 136,237,961.76
  5. Step 5: Solve for x
    x = 136,237,961.76/13,358.64
  6. Step 6: Final answer
    x = 10,198.49

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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.