Home / 15,380.04-21,219.60-8,664.60

Finding the Fourth Proportional to 15,380.04, 21,219.60 and 8,664.60

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Solution

The fourth proportional to 15,380.04, 21,219.60 and 8,664.60 is: 11,954.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,380.04 : 21,219.60 = 8,664.60 : x
  2. Step 2: Convert to fraction form
    15,380.04/21,219.60 = 8,664.60/x
  3. Step 3: Cross multiply
    15,380.04x = 21,219.60 × 8,664.60
  4. Step 4: Simplify right side
    15,380.04x = 183,859,346.16
  5. Step 5: Solve for x
    x = 183,859,346.16/15,380.04
  6. Step 6: Final answer
    x = 11,954.41

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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.