Home / 13,157.64-18,157.05-7,189.26

Finding the Fourth Proportional to 13,157.64, 18,157.05 and 7,189.26

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Solution

The fourth proportional to 13,157.64, 18,157.05 and 7,189.26 is: 9,920.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,157.64 : 18,157.05 = 7,189.26 : x
  2. Step 2: Convert to fraction form
    13,157.64/18,157.05 = 7,189.26/x
  3. Step 3: Cross multiply
    13,157.64x = 18,157.05 × 7,189.26
  4. Step 4: Simplify right side
    13,157.64x = 130,535,753.28
  5. Step 5: Solve for x
    x = 130,535,753.28/13,157.64
  6. Step 6: Final answer
    x = 9,920.91

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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.