Home / 11,705.40-16,157.10-9,631.80

Finding the Fourth Proportional to 11,705.40, 16,157.10 and 9,631.80

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Solution

The fourth proportional to 11,705.40, 16,157.10 and 9,631.80 is: 13,294.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,705.40 : 16,157.10 = 9,631.80 : x
  2. Step 2: Convert to fraction form
    11,705.40/16,157.10 = 9,631.80/x
  3. Step 3: Cross multiply
    11,705.40x = 16,157.10 × 9,631.80
  4. Step 4: Simplify right side
    11,705.40x = 155,621,955.78
  5. Step 5: Solve for x
    x = 155,621,955.78/11,705.40
  6. Step 6: Final answer
    x = 13,294.89

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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.