Home / 30,053.62-41,483.64-21,103.30

Finding the Fourth Proportional to 30,053.62, 41,483.64 and 21,103.30

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Solution

The fourth proportional to 30,053.62, 41,483.64 and 21,103.30 is: 29,129.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,053.62 : 41,483.64 = 21,103.30 : x
  2. Step 2: Convert to fraction form
    30,053.62/41,483.64 = 21,103.30/x
  3. Step 3: Cross multiply
    30,053.62x = 41,483.64 × 21,103.30
  4. Step 4: Simplify right side
    30,053.62x = 875,441,700.01
  5. Step 5: Solve for x
    x = 875,441,700.01/30,053.62
  6. Step 6: Final answer
    x = 29,129.33

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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.