Home / 13,855.12-19,120.07-8,549.93

Finding the Fourth Proportional to 13,855.12, 19,120.07 and 8,549.93

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Solution

The fourth proportional to 13,855.12, 19,120.07 and 8,549.93 is: 11,798.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,855.12 : 19,120.07 = 8,549.93 : x
  2. Step 2: Convert to fraction form
    13,855.12/19,120.07 = 8,549.93/x
  3. Step 3: Cross multiply
    13,855.12x = 19,120.07 × 8,549.93
  4. Step 4: Simplify right side
    13,855.12x = 163,475,260.10
  5. Step 5: Solve for x
    x = 163,475,260.10/13,855.12
  6. Step 6: Final answer
    x = 11,798.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.