Home / 13,157.50-18,165.45-8,450.08

Finding the Fourth Proportional to 13,157.50, 18,165.45 and 8,450.08

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Solution

The fourth proportional to 13,157.50, 18,165.45 and 8,450.08 is: 11,666.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,157.50 : 18,165.45 = 8,450.08 : x
  2. Step 2: Convert to fraction form
    13,157.50/18,165.45 = 8,450.08/x
  3. Step 3: Cross multiply
    13,157.50x = 18,165.45 × 8,450.08
  4. Step 4: Simplify right side
    13,157.50x = 153,499,505.74
  5. Step 5: Solve for x
    x = 153,499,505.74/13,157.50
  6. Step 6: Final answer
    x = 11,666.31

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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.