Home / 13,161.30-18,162.55-7,193.01

Finding the Fourth Proportional to 13,161.30, 18,162.55 and 7,193.01

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Solution

The fourth proportional to 13,161.30, 18,162.55 and 7,193.01 is: 9,926.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,161.30 : 18,162.55 = 7,193.01 : x
  2. Step 2: Convert to fraction form
    13,161.30/18,162.55 = 7,193.01/x
  3. Step 3: Cross multiply
    13,161.30x = 18,162.55 × 7,193.01
  4. Step 4: Simplify right side
    13,161.30x = 130,643,403.78
  5. Step 5: Solve for x
    x = 130,643,403.78/13,161.30
  6. Step 6: Final answer
    x = 9,926.33

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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.