Home / 13,138.24-19,681.44-9,855.04

Finding the Fourth Proportional to 13,138.24, 19,681.44 and 9,855.04

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Solution

The fourth proportional to 13,138.24, 19,681.44 and 9,855.04 is: 14,763.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,138.24 : 19,681.44 = 9,855.04 : x
  2. Step 2: Convert to fraction form
    13,138.24/19,681.44 = 9,855.04/x
  3. Step 3: Cross multiply
    13,138.24x = 19,681.44 × 9,855.04
  4. Step 4: Simplify right side
    13,138.24x = 193,961,378.46
  5. Step 5: Solve for x
    x = 193,961,378.46/13,138.24
  6. Step 6: Final answer
    x = 14,763.12

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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.