Home / 13,157.89-18,159.12-7,190.44

Finding the Fourth Proportional to 13,157.89, 18,159.12 and 7,190.44

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Solution

The fourth proportional to 13,157.89, 18,159.12 and 7,190.44 is: 9,923.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,157.89 : 18,159.12 = 7,190.44 : x
  2. Step 2: Convert to fraction form
    13,157.89/18,159.12 = 7,190.44/x
  3. Step 3: Cross multiply
    13,157.89x = 18,159.12 × 7,190.44
  4. Step 4: Simplify right side
    13,157.89x = 130,572,062.81
  5. Step 5: Solve for x
    x = 130,572,062.81/13,157.89
  6. Step 6: Final answer
    x = 9,923.48

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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.