Home / 13,159.89-18,161.88-7,192.44

Finding the Fourth Proportional to 13,159.89, 18,161.88 and 7,192.44

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Solution

The fourth proportional to 13,159.89, 18,161.88 and 7,192.44 is: 9,926.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,159.89 : 18,161.88 = 7,192.44 : x
  2. Step 2: Convert to fraction form
    13,159.89/18,161.88 = 7,192.44/x
  3. Step 3: Cross multiply
    13,159.89x = 18,161.88 × 7,192.44
  4. Step 4: Simplify right side
    13,159.89x = 130,628,232.19
  5. Step 5: Solve for x
    x = 130,628,232.19/13,159.89
  6. Step 6: Final answer
    x = 9,926.24

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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.