Home / 15,124.14-20,872.48-8,410.32

Finding the Fourth Proportional to 15,124.14, 20,872.48 and 8,410.32

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Solution

The fourth proportional to 15,124.14, 20,872.48 and 8,410.32 is: 11,606.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,124.14 : 20,872.48 = 8,410.32 : x
  2. Step 2: Convert to fraction form
    15,124.14/20,872.48 = 8,410.32/x
  3. Step 3: Cross multiply
    15,124.14x = 20,872.48 × 8,410.32
  4. Step 4: Simplify right side
    15,124.14x = 175,544,235.99
  5. Step 5: Solve for x
    x = 175,544,235.99/15,124.14
  6. Step 6: Final answer
    x = 11,606.89

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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.