Home / 15,553.39-21,464.01-8,479.87

Finding the Fourth Proportional to 15,553.39, 21,464.01 and 8,479.87

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Solution

The fourth proportional to 15,553.39, 21,464.01 and 8,479.87 is: 11,702.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,553.39 : 21,464.01 = 8,479.87 : x
  2. Step 2: Convert to fraction form
    15,553.39/21,464.01 = 8,479.87/x
  3. Step 3: Cross multiply
    15,553.39x = 21,464.01 × 8,479.87
  4. Step 4: Simplify right side
    15,553.39x = 182,012,014.48
  5. Step 5: Solve for x
    x = 182,012,014.48/15,553.39
  6. Step 6: Final answer
    x = 11,702.40

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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.