Home / 15,439.08-21,306.03-8,365.49

Finding the Fourth Proportional to 15,439.08, 21,306.03 and 8,365.49

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Solution

The fourth proportional to 15,439.08, 21,306.03 and 8,365.49 is: 11,544.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,439.08 : 21,306.03 = 8,365.49 : x
  2. Step 2: Convert to fraction form
    15,439.08/21,306.03 = 8,365.49/x
  3. Step 3: Cross multiply
    15,439.08x = 21,306.03 × 8,365.49
  4. Step 4: Simplify right side
    15,439.08x = 178,235,274.37
  5. Step 5: Solve for x
    x = 178,235,274.37/15,439.08
  6. Step 6: Final answer
    x = 11,544.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.