Home / 13,320.88-18,388.20-8,020.24

Finding the Fourth Proportional to 13,320.88, 18,388.20 and 8,020.24

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Solution

The fourth proportional to 13,320.88, 18,388.20 and 8,020.24 is: 11,071.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,320.88 : 18,388.20 = 8,020.24 : x
  2. Step 2: Convert to fraction form
    13,320.88/18,388.20 = 8,020.24/x
  3. Step 3: Cross multiply
    13,320.88x = 18,388.20 × 8,020.24
  4. Step 4: Simplify right side
    13,320.88x = 147,477,777.17
  5. Step 5: Solve for x
    x = 147,477,777.17/13,320.88
  6. Step 6: Final answer
    x = 11,071.17

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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.