Home / 13,191.40-18,204.56-7,223.32

Finding the Fourth Proportional to 13,191.40, 18,204.56 and 7,223.32

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Solution

The fourth proportional to 13,191.40, 18,204.56 and 7,223.32 is: 9,968.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,191.40 : 18,204.56 = 7,223.32 : x
  2. Step 2: Convert to fraction form
    13,191.40/18,204.56 = 7,223.32/x
  3. Step 3: Cross multiply
    13,191.40x = 18,204.56 × 7,223.32
  4. Step 4: Simplify right side
    13,191.40x = 131,497,362.34
  5. Step 5: Solve for x
    x = 131,497,362.34/13,191.40
  6. Step 6: Final answer
    x = 9,968.42

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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.