Home / 14,400.42-19,861.85-12,787.28

Finding the Fourth Proportional to 14,400.42, 19,861.85 and 12,787.28

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Solution

The fourth proportional to 14,400.42, 19,861.85 and 12,787.28 is: 17,636.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,400.42 : 19,861.85 = 12,787.28 : x
  2. Step 2: Convert to fraction form
    14,400.42/19,861.85 = 12,787.28/x
  3. Step 3: Cross multiply
    14,400.42x = 19,861.85 × 12,787.28
  4. Step 4: Simplify right side
    14,400.42x = 253,979,037.27
  5. Step 5: Solve for x
    x = 253,979,037.27/14,400.42
  6. Step 6: Final answer
    x = 17,636.92

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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.