Home / 14,122.20-19,488.78-7,748.80

Finding the Fourth Proportional to 14,122.20, 19,488.78 and 7,748.80

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Solution

The fourth proportional to 14,122.20, 19,488.78 and 7,748.80 is: 10,693.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,122.20 : 19,488.78 = 7,748.80 : x
  2. Step 2: Convert to fraction form
    14,122.20/19,488.78 = 7,748.80/x
  3. Step 3: Cross multiply
    14,122.20x = 19,488.78 × 7,748.80
  4. Step 4: Simplify right side
    14,122.20x = 151,014,658.46
  5. Step 5: Solve for x
    x = 151,014,658.46/14,122.20
  6. Step 6: Final answer
    x = 10,693.42

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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.