Home / 13,430.50-18,534.42-7,380.66

Finding the Fourth Proportional to 13,430.50, 18,534.42 and 7,380.66

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Solution

The fourth proportional to 13,430.50, 18,534.42 and 7,380.66 is: 10,185.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,430.50 : 18,534.42 = 7,380.66 : x
  2. Step 2: Convert to fraction form
    13,430.50/18,534.42 = 7,380.66/x
  3. Step 3: Cross multiply
    13,430.50x = 18,534.42 × 7,380.66
  4. Step 4: Simplify right side
    13,430.50x = 136,796,252.32
  5. Step 5: Solve for x
    x = 136,796,252.32/13,430.50
  6. Step 6: Final answer
    x = 10,185.49

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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.