Home / 13,159.72-18,129.18-9,173.62

Finding the Fourth Proportional to 13,159.72, 18,129.18 and 9,173.62

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Solution

The fourth proportional to 13,159.72, 18,129.18 and 9,173.62 is: 12,637.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,159.72 : 18,129.18 = 9,173.62 : x
  2. Step 2: Convert to fraction form
    13,159.72/18,129.18 = 9,173.62/x
  3. Step 3: Cross multiply
    13,159.72x = 18,129.18 × 9,173.62
  4. Step 4: Simplify right side
    13,159.72x = 166,310,208.23
  5. Step 5: Solve for x
    x = 166,310,208.23/13,159.72
  6. Step 6: Final answer
    x = 12,637.82

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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.