Home / 20,953.24-31,409.10-9,840.04

Finding the Fourth Proportional to 20,953.24, 31,409.10 and 9,840.04

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Solution

The fourth proportional to 20,953.24, 31,409.10 and 9,840.04 is: 14,750.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,953.24 : 31,409.10 = 9,840.04 : x
  2. Step 2: Convert to fraction form
    20,953.24/31,409.10 = 9,840.04/x
  3. Step 3: Cross multiply
    20,953.24x = 31,409.10 × 9,840.04
  4. Step 4: Simplify right side
    20,953.24x = 309,066,800.36
  5. Step 5: Solve for x
    x = 309,066,800.36/20,953.24
  6. Step 6: Final answer
    x = 14,750.31

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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.