Home / 21,665.10-32,492.97-12,653.20

Finding the Fourth Proportional to 21,665.10, 32,492.97 and 12,653.20

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Solution

The fourth proportional to 21,665.10, 32,492.97 and 12,653.20 is: 18,977.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,665.10 : 32,492.97 = 12,653.20 : x
  2. Step 2: Convert to fraction form
    21,665.10/32,492.97 = 12,653.20/x
  3. Step 3: Cross multiply
    21,665.10x = 32,492.97 × 12,653.20
  4. Step 4: Simplify right side
    21,665.10x = 411,140,048.00
  5. Step 5: Solve for x
    x = 411,140,048.00/21,665.10
  6. Step 6: Final answer
    x = 18,977.07

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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.