Home / 13,929.12-20,946.72-11,124.24

Finding the Fourth Proportional to 13,929.12, 20,946.72 and 11,124.24

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Solution

The fourth proportional to 13,929.12, 20,946.72 and 11,124.24 is: 16,728.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,929.12 : 20,946.72 = 11,124.24 : x
  2. Step 2: Convert to fraction form
    13,929.12/20,946.72 = 11,124.24/x
  3. Step 3: Cross multiply
    13,929.12x = 20,946.72 × 11,124.24
  4. Step 4: Simplify right side
    13,929.12x = 233,016,340.49
  5. Step 5: Solve for x
    x = 233,016,340.49/13,929.12
  6. Step 6: Final answer
    x = 16,728.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.