Home / 12,945.90-19,263.80-12,902.16

Finding the Fourth Proportional to 12,945.90, 19,263.80 and 12,902.16

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Solution

The fourth proportional to 12,945.90, 19,263.80 and 12,902.16 is: 19,198.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,945.90 : 19,263.80 = 12,902.16 : x
  2. Step 2: Convert to fraction form
    12,945.90/19,263.80 = 12,902.16/x
  3. Step 3: Cross multiply
    12,945.90x = 19,263.80 × 12,902.16
  4. Step 4: Simplify right side
    12,945.90x = 248,544,565.30
  5. Step 5: Solve for x
    x = 248,544,565.30/12,945.90
  6. Step 6: Final answer
    x = 19,198.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.