Home / 13,219.12-18,242.24-7,630

Finding the Fourth Proportional to 13,219.12, 18,242.24 and 7,630

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Solution

The fourth proportional to 13,219.12, 18,242.24 and 7,630 is: 10,529.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,219.12 : 18,242.24 = 7,630 : x
  2. Step 2: Convert to fraction form
    13,219.12/18,242.24 = 7,630/x
  3. Step 3: Cross multiply
    13,219.12x = 18,242.24 × 7,630
  4. Step 4: Simplify right side
    13,219.12x = 139,188,291.20
  5. Step 5: Solve for x
    x = 139,188,291.20/13,219.12
  6. Step 6: Final answer
    x = 10,529.32

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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.