Home / 13,191.10-18,203.47-7,222.66

Finding the Fourth Proportional to 13,191.10, 18,203.47 and 7,222.66

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Solution

The fourth proportional to 13,191.10, 18,203.47 and 7,222.66 is: 9,967.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,191.10 : 18,203.47 = 7,222.66 : x
  2. Step 2: Convert to fraction form
    13,191.10/18,203.47 = 7,222.66/x
  3. Step 3: Cross multiply
    13,191.10x = 18,203.47 × 7,222.66
  4. Step 4: Simplify right side
    13,191.10x = 131,477,474.63
  5. Step 5: Solve for x
    x = 131,477,474.63/13,191.10
  6. Step 6: Final answer
    x = 9,967.14

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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.