Home / 15,463.72-21,339.96-8,390.14

Finding the Fourth Proportional to 15,463.72, 21,339.96 and 8,390.14

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Solution

The fourth proportional to 15,463.72, 21,339.96 and 8,390.14 is: 11,578.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,463.72 : 21,339.96 = 8,390.14 : x
  2. Step 2: Convert to fraction form
    15,463.72/21,339.96 = 8,390.14/x
  3. Step 3: Cross multiply
    15,463.72x = 21,339.96 × 8,390.14
  4. Step 4: Simplify right side
    15,463.72x = 179,045,317.23
  5. Step 5: Solve for x
    x = 179,045,317.23/15,463.72
  6. Step 6: Final answer
    x = 11,578.41

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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.