Home / 20,640.02-30,964.88-7,492.50

Finding the Fourth Proportional to 20,640.02, 30,964.88 and 7,492.50

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Solution

The fourth proportional to 20,640.02, 30,964.88 and 7,492.50 is: 11,240.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,640.02 : 30,964.88 = 7,492.50 : x
  2. Step 2: Convert to fraction form
    20,640.02/30,964.88 = 7,492.50/x
  3. Step 3: Cross multiply
    20,640.02x = 30,964.88 × 7,492.50
  4. Step 4: Simplify right side
    20,640.02x = 232,004,382.13
  5. Step 5: Solve for x
    x = 232,004,382.13/20,640.02
  6. Step 6: Final answer
    x = 11,240.51

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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.