Home / 13,166.40-19,760.40-5,381.04

Finding the Fourth Proportional to 13,166.40, 19,760.40 and 5,381.04

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Solution

The fourth proportional to 13,166.40, 19,760.40 and 5,381.04 is: 8,075.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,166.40 : 19,760.40 = 5,381.04 : x
  2. Step 2: Convert to fraction form
    13,166.40/19,760.40 = 5,381.04/x
  3. Step 3: Cross multiply
    13,166.40x = 19,760.40 × 5,381.04
  4. Step 4: Simplify right side
    13,166.40x = 106,331,502.82
  5. Step 5: Solve for x
    x = 106,331,502.82/13,166.40
  6. Step 6: Final answer
    x = 8,075.97

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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.