Home / 12,388.16-18,577.37-4,991.24

Finding the Fourth Proportional to 12,388.16, 18,577.37 and 4,991.24

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Solution

The fourth proportional to 12,388.16, 18,577.37 and 4,991.24 is: 7,484.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,388.16 : 18,577.37 = 4,991.24 : x
  2. Step 2: Convert to fraction form
    12,388.16/18,577.37 = 4,991.24/x
  3. Step 3: Cross multiply
    12,388.16x = 18,577.37 × 4,991.24
  4. Step 4: Simplify right side
    12,388.16x = 92,724,031.83
  5. Step 5: Solve for x
    x = 92,724,031.83/12,388.16
  6. Step 6: Final answer
    x = 7,484.89

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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.