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Finding the Fourth Proportional to 15,321.81, 22,980.99 and 4,230.07

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Solution

The fourth proportional to 15,321.81, 22,980.99 and 4,230.07 is: 6,344.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,321.81 : 22,980.99 = 4,230.07 : x
  2. Step 2: Convert to fraction form
    15,321.81/22,980.99 = 4,230.07/x
  3. Step 3: Cross multiply
    15,321.81x = 22,980.99 × 4,230.07
  4. Step 4: Simplify right side
    15,321.81x = 97,211,272.15
  5. Step 5: Solve for x
    x = 97,211,272.15/15,321.81
  6. Step 6: Final answer
    x = 6,344.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.