Home / 15,515.76-21,410.12-8,799.24

Finding the Fourth Proportional to 15,515.76, 21,410.12 and 8,799.24

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Solution

The fourth proportional to 15,515.76, 21,410.12 and 8,799.24 is: 12,142.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,515.76 : 21,410.12 = 8,799.24 : x
  2. Step 2: Convert to fraction form
    15,515.76/21,410.12 = 8,799.24/x
  3. Step 3: Cross multiply
    15,515.76x = 21,410.12 × 8,799.24
  4. Step 4: Simplify right side
    15,515.76x = 188,392,784.31
  5. Step 5: Solve for x
    x = 188,392,784.31/15,515.76
  6. Step 6: Final answer
    x = 12,142.03

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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.