Home / 12,905.30-19,369.70-6,669.52

Finding the Fourth Proportional to 12,905.30, 19,369.70 and 6,669.52

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Solution

The fourth proportional to 12,905.30, 19,369.70 and 6,669.52 is: 10,010.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,905.30 : 19,369.70 = 6,669.52 : x
  2. Step 2: Convert to fraction form
    12,905.30/19,369.70 = 6,669.52/x
  3. Step 3: Cross multiply
    12,905.30x = 19,369.70 × 6,669.52
  4. Step 4: Simplify right side
    12,905.30x = 129,186,601.54
  5. Step 5: Solve for x
    x = 129,186,601.54/12,905.30
  6. Step 6: Final answer
    x = 10,010.35

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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.