Home / 9,667.40-13,330.90-7,154.78

Finding the Fourth Proportional to 9,667.40, 13,330.90 and 7,154.78

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Solution

The fourth proportional to 9,667.40, 13,330.90 and 7,154.78 is: 9,866.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,667.40 : 13,330.90 = 7,154.78 : x
  2. Step 2: Convert to fraction form
    9,667.40/13,330.90 = 7,154.78/x
  3. Step 3: Cross multiply
    9,667.40x = 13,330.90 × 7,154.78
  4. Step 4: Simplify right side
    9,667.40x = 95,379,702.32
  5. Step 5: Solve for x
    x = 95,379,702.32/9,667.40
  6. Step 6: Final answer
    x = 9,866.11

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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.