Home / 12,387.36-18,583.88-5,368.55

Finding the Fourth Proportional to 12,387.36, 18,583.88 and 5,368.55

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Solution

The fourth proportional to 12,387.36, 18,583.88 and 5,368.55 is: 8,054.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,387.36 : 18,583.88 = 5,368.55 : x
  2. Step 2: Convert to fraction form
    12,387.36/18,583.88 = 5,368.55/x
  3. Step 3: Cross multiply
    12,387.36x = 18,583.88 × 5,368.55
  4. Step 4: Simplify right side
    12,387.36x = 99,768,438.90
  5. Step 5: Solve for x
    x = 99,768,438.90/12,387.36
  6. Step 6: Final answer
    x = 8,054.05

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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.