Home / 12,261.08-18,349.50-7,579.28

Finding the Fourth Proportional to 12,261.08, 18,349.50 and 7,579.28

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Solution

The fourth proportional to 12,261.08, 18,349.50 and 7,579.28 is: 11,342.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,261.08 : 18,349.50 = 7,579.28 : x
  2. Step 2: Convert to fraction form
    12,261.08/18,349.50 = 7,579.28/x
  3. Step 3: Cross multiply
    12,261.08x = 18,349.50 × 7,579.28
  4. Step 4: Simplify right side
    12,261.08x = 139,075,998.36
  5. Step 5: Solve for x
    x = 139,075,998.36/12,261.08
  6. Step 6: Final answer
    x = 11,342.88

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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.