Home / 12,159.18-16,776.80-7,379.01

Finding the Fourth Proportional to 12,159.18, 16,776.80 and 7,379.01

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Solution

The fourth proportional to 12,159.18, 16,776.80 and 7,379.01 is: 10,181.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,159.18 : 16,776.80 = 7,379.01 : x
  2. Step 2: Convert to fraction form
    12,159.18/16,776.80 = 7,379.01/x
  3. Step 3: Cross multiply
    12,159.18x = 16,776.80 × 7,379.01
  4. Step 4: Simplify right side
    12,159.18x = 123,796,174.97
  5. Step 5: Solve for x
    x = 123,796,174.97/12,159.18
  6. Step 6: Final answer
    x = 10,181.30

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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.