Home / 12,310.62-16,988.60-7,005.40

Finding the Fourth Proportional to 12,310.62, 16,988.60 and 7,005.40

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Solution

The fourth proportional to 12,310.62, 16,988.60 and 7,005.40 is: 9,667.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,310.62 : 16,988.60 = 7,005.40 : x
  2. Step 2: Convert to fraction form
    12,310.62/16,988.60 = 7,005.40/x
  3. Step 3: Cross multiply
    12,310.62x = 16,988.60 × 7,005.40
  4. Step 4: Simplify right side
    12,310.62x = 119,011,938.44
  5. Step 5: Solve for x
    x = 119,011,938.44/12,310.62
  6. Step 6: Final answer
    x = 9,667.42

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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.