Home / 12,880.10-19,327.41-6,956.91

Finding the Fourth Proportional to 12,880.10, 19,327.41 and 6,956.91

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Solution

The fourth proportional to 12,880.10, 19,327.41 and 6,956.91 is: 10,439.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,880.10 : 19,327.41 = 6,956.91 : x
  2. Step 2: Convert to fraction form
    12,880.10/19,327.41 = 6,956.91/x
  3. Step 3: Cross multiply
    12,880.10x = 19,327.41 × 6,956.91
  4. Step 4: Simplify right side
    12,880.10x = 134,459,051.90
  5. Step 5: Solve for x
    x = 134,459,051.90/12,880.10
  6. Step 6: Final answer
    x = 10,439.28

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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.