Home / 13,373.18-18,455.25-7,404.68

Finding the Fourth Proportional to 13,373.18, 18,455.25 and 7,404.68

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Solution

The fourth proportional to 13,373.18, 18,455.25 and 7,404.68 is: 10,218.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,373.18 : 18,455.25 = 7,404.68 : x
  2. Step 2: Convert to fraction form
    13,373.18/18,455.25 = 7,404.68/x
  3. Step 3: Cross multiply
    13,373.18x = 18,455.25 × 7,404.68
  4. Step 4: Simplify right side
    13,373.18x = 136,655,220.57
  5. Step 5: Solve for x
    x = 136,655,220.57/13,373.18
  6. Step 6: Final answer
    x = 10,218.60

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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.