Home / 13,165.72-19,726.80-7,960.84

Finding the Fourth Proportional to 13,165.72, 19,726.80 and 7,960.84

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Solution

The fourth proportional to 13,165.72, 19,726.80 and 7,960.84 is: 11,928.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,165.72 : 19,726.80 = 7,960.84 : x
  2. Step 2: Convert to fraction form
    13,165.72/19,726.80 = 7,960.84/x
  3. Step 3: Cross multiply
    13,165.72x = 19,726.80 × 7,960.84
  4. Step 4: Simplify right side
    13,165.72x = 157,041,898.51
  5. Step 5: Solve for x
    x = 157,041,898.51/13,165.72
  6. Step 6: Final answer
    x = 11,928.09

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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.