Home / 21,612.63-32,420.62-8,292.00

Finding the Fourth Proportional to 21,612.63, 32,420.62 and 8,292.00

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Solution

The fourth proportional to 21,612.63, 32,420.62 and 8,292.00 is: 12,438.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,612.63 : 32,420.62 = 8,292.00 : x
  2. Step 2: Convert to fraction form
    21,612.63/32,420.62 = 8,292.00/x
  3. Step 3: Cross multiply
    21,612.63x = 32,420.62 × 8,292.00
  4. Step 4: Simplify right side
    21,612.63x = 268,831,912.98
  5. Step 5: Solve for x
    x = 268,831,912.98/21,612.63
  6. Step 6: Final answer
    x = 12,438.65

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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.