Home / 15,463.37-21,339.54-8,389.79

Finding the Fourth Proportional to 15,463.37, 21,339.54 and 8,389.79

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Solution

The fourth proportional to 15,463.37, 21,339.54 and 8,389.79 is: 11,577.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,463.37 : 21,339.54 = 8,389.79 : x
  2. Step 2: Convert to fraction form
    15,463.37/21,339.54 = 8,389.79/x
  3. Step 3: Cross multiply
    15,463.37x = 21,339.54 × 8,389.79
  4. Step 4: Simplify right side
    15,463.37x = 179,034,152.60
  5. Step 5: Solve for x
    x = 179,034,152.60/15,463.37
  6. Step 6: Final answer
    x = 11,577.96

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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.