Home / 17,921.91-24,728.40-12,181.35

Finding the Fourth Proportional to 17,921.91, 24,728.40 and 12,181.35

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Solution

The fourth proportional to 17,921.91, 24,728.40 and 12,181.35 is: 16,807.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,921.91 : 24,728.40 = 12,181.35 : x
  2. Step 2: Convert to fraction form
    17,921.91/24,728.40 = 12,181.35/x
  3. Step 3: Cross multiply
    17,921.91x = 24,728.40 × 12,181.35
  4. Step 4: Simplify right side
    17,921.91x = 301,225,295.34
  5. Step 5: Solve for x
    x = 301,225,295.34/17,921.91
  6. Step 6: Final answer
    x = 16,807.66

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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.