Home / 11,817.13-16,307.45-6,439.64

Finding the Fourth Proportional to 11,817.13, 16,307.45 and 6,439.64

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Solution

The fourth proportional to 11,817.13, 16,307.45 and 6,439.64 is: 8,886.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,817.13 : 16,307.45 = 6,439.64 : x
  2. Step 2: Convert to fraction form
    11,817.13/16,307.45 = 6,439.64/x
  3. Step 3: Cross multiply
    11,817.13x = 16,307.45 × 6,439.64
  4. Step 4: Simplify right side
    11,817.13x = 105,014,107.32
  5. Step 5: Solve for x
    x = 105,014,107.32/11,817.13
  6. Step 6: Final answer
    x = 8,886.60

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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.