Home / 19,139.48-28,709.22-10,429.75

Finding the Fourth Proportional to 19,139.48, 28,709.22 and 10,429.75

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Solution

The fourth proportional to 19,139.48, 28,709.22 and 10,429.75 is: 15,644.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,139.48 : 28,709.22 = 10,429.75 : x
  2. Step 2: Convert to fraction form
    19,139.48/28,709.22 = 10,429.75/x
  3. Step 3: Cross multiply
    19,139.48x = 28,709.22 × 10,429.75
  4. Step 4: Simplify right side
    19,139.48x = 299,429,987.30
  5. Step 5: Solve for x
    x = 299,429,987.30/19,139.48
  6. Step 6: Final answer
    x = 15,644.63

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Similar ratio
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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.