Home / 12,388.59-18,577.65-4,991.06

Finding the Fourth Proportional to 12,388.59, 18,577.65 and 4,991.06

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Solution

The fourth proportional to 12,388.59, 18,577.65 and 4,991.06 is: 7,484.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,388.59 : 18,577.65 = 4,991.06 : x
  2. Step 2: Convert to fraction form
    12,388.59/18,577.65 = 4,991.06/x
  3. Step 3: Cross multiply
    12,388.59x = 18,577.65 × 4,991.06
  4. Step 4: Simplify right side
    12,388.59x = 92,722,187.30
  5. Step 5: Solve for x
    x = 92,722,187.30/12,388.59
  6. Step 6: Final answer
    x = 7,484.48

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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.