Home / 12,388.40-18,585.44-5,369.58

Finding the Fourth Proportional to 12,388.40, 18,585.44 and 5,369.58

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Solution

The fourth proportional to 12,388.40, 18,585.44 and 5,369.58 is: 8,055.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,388.40 : 18,585.44 = 5,369.58 : x
  2. Step 2: Convert to fraction form
    12,388.40/18,585.44 = 5,369.58/x
  3. Step 3: Cross multiply
    12,388.40x = 18,585.44 × 5,369.58
  4. Step 4: Simplify right side
    12,388.40x = 99,795,980.07
  5. Step 5: Solve for x
    x = 99,795,980.07/12,388.40
  6. Step 6: Final answer
    x = 8,055.60

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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.