Home / 13,211.45-18,232.06-7,242.77

Finding the Fourth Proportional to 13,211.45, 18,232.06 and 7,242.77

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Solution

The fourth proportional to 13,211.45, 18,232.06 and 7,242.77 is: 9,995.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,211.45 : 18,232.06 = 7,242.77 : x
  2. Step 2: Convert to fraction form
    13,211.45/18,232.06 = 7,242.77/x
  3. Step 3: Cross multiply
    13,211.45x = 18,232.06 × 7,242.77
  4. Step 4: Simplify right side
    13,211.45x = 132,050,576.07
  5. Step 5: Solve for x
    x = 132,050,576.07/13,211.45
  6. Step 6: Final answer
    x = 9,995.16

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Half scale
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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.