Home / 10,235.12-15,272.84-9,131.90

Finding the Fourth Proportional to 10,235.12, 15,272.84 and 9,131.90

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Solution

The fourth proportional to 10,235.12, 15,272.84 and 9,131.90 is: 13,626.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,235.12 : 15,272.84 = 9,131.90 : x
  2. Step 2: Convert to fraction form
    10,235.12/15,272.84 = 9,131.90/x
  3. Step 3: Cross multiply
    10,235.12x = 15,272.84 × 9,131.90
  4. Step 4: Simplify right side
    10,235.12x = 139,470,047.60
  5. Step 5: Solve for x
    x = 139,470,047.60/10,235.12
  6. Step 6: Final answer
    x = 13,626.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.