Home / 20,201.40-30,302.10-11,430.36

Finding the Fourth Proportional to 20,201.40, 30,302.10 and 11,430.36

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Solution

The fourth proportional to 20,201.40, 30,302.10 and 11,430.36 is: 17,145.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,201.40 : 30,302.10 = 11,430.36 : x
  2. Step 2: Convert to fraction form
    20,201.40/30,302.10 = 11,430.36/x
  3. Step 3: Cross multiply
    20,201.40x = 30,302.10 × 11,430.36
  4. Step 4: Simplify right side
    20,201.40x = 346,363,911.76
  5. Step 5: Solve for x
    x = 346,363,911.76/20,201.40
  6. Step 6: Final answer
    x = 17,145.54

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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.