Home / 19,121.00-28,638.12-10,220.66

Finding the Fourth Proportional to 19,121.00, 28,638.12 and 10,220.66

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Solution

The fourth proportional to 19,121.00, 28,638.12 and 10,220.66 is: 15,307.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,121.00 : 28,638.12 = 10,220.66 : x
  2. Step 2: Convert to fraction form
    19,121.00/28,638.12 = 10,220.66/x
  3. Step 3: Cross multiply
    19,121.00x = 28,638.12 × 10,220.66
  4. Step 4: Simplify right side
    19,121.00x = 292,700,651.18
  5. Step 5: Solve for x
    x = 292,700,651.18/19,121.00
  6. Step 6: Final answer
    x = 15,307.81

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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.