Home / 20,490.04-30,715.83-11,116.30

Finding the Fourth Proportional to 20,490.04, 30,715.83 and 11,116.30

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Solution

The fourth proportional to 20,490.04, 30,715.83 and 11,116.30 is: 16,664.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,490.04 : 30,715.83 = 11,116.30 : x
  2. Step 2: Convert to fraction form
    20,490.04/30,715.83 = 11,116.30/x
  3. Step 3: Cross multiply
    20,490.04x = 30,715.83 × 11,116.30
  4. Step 4: Simplify right side
    20,490.04x = 341,446,381.03
  5. Step 5: Solve for x
    x = 341,446,381.03/20,490.04
  6. Step 6: Final answer
    x = 16,664.02

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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.