Home / 13,165.40-19,748.10-11,658.80

Finding the Fourth Proportional to 13,165.40, 19,748.10 and 11,658.80

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Solution

The fourth proportional to 13,165.40, 19,748.10 and 11,658.80 is: 17,488.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,165.40 : 19,748.10 = 11,658.80 : x
  2. Step 2: Convert to fraction form
    13,165.40/19,748.10 = 11,658.80/x
  3. Step 3: Cross multiply
    13,165.40x = 19,748.10 × 11,658.80
  4. Step 4: Simplify right side
    13,165.40x = 230,239,148.28
  5. Step 5: Solve for x
    x = 230,239,148.28/13,165.40
  6. Step 6: Final answer
    x = 17,488.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.