Home / 13,189.84-18,205.36-9,156.92

Finding the Fourth Proportional to 13,189.84, 18,205.36 and 9,156.92

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Solution

The fourth proportional to 13,189.84, 18,205.36 and 9,156.92 is: 12,638.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,189.84 : 18,205.36 = 9,156.92 : x
  2. Step 2: Convert to fraction form
    13,189.84/18,205.36 = 9,156.92/x
  3. Step 3: Cross multiply
    13,189.84x = 18,205.36 × 9,156.92
  4. Step 4: Simplify right side
    13,189.84x = 166,704,911.17
  5. Step 5: Solve for x
    x = 166,704,911.17/13,189.84
  6. Step 6: Final answer
    x = 12,638.89

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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.