Home / 15,563.18-21,477.68-8,758.40

Finding the Fourth Proportional to 15,563.18, 21,477.68 and 8,758.40

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Solution

The fourth proportional to 15,563.18, 21,477.68 and 8,758.40 is: 12,086.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,563.18 : 21,477.68 = 8,758.40 : x
  2. Step 2: Convert to fraction form
    15,563.18/21,477.68 = 8,758.40/x
  3. Step 3: Cross multiply
    15,563.18x = 21,477.68 × 8,758.40
  4. Step 4: Simplify right side
    15,563.18x = 188,109,961.33
  5. Step 5: Solve for x
    x = 188,109,961.33/15,563.18
  6. Step 6: Final answer
    x = 12,086.86

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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.