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Finding the Fourth Proportional to 21,808.99, 32,730.03 and 15,980.83

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Solution

The fourth proportional to 21,808.99, 32,730.03 and 15,980.83 is: 23,983.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,808.99 : 32,730.03 = 15,980.83 : x
  2. Step 2: Convert to fraction form
    21,808.99/32,730.03 = 15,980.83/x
  3. Step 3: Cross multiply
    21,808.99x = 32,730.03 × 15,980.83
  4. Step 4: Simplify right side
    21,808.99x = 523,053,045.32
  5. Step 5: Solve for x
    x = 523,053,045.32/21,808.99
  6. Step 6: Final answer
    x = 23,983.37

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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.