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Finding the Fourth Proportional to 20,672.94, 31,009.43 and 7,525.42

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Solution

The fourth proportional to 20,672.94, 31,009.43 and 7,525.42 is: 11,288.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,672.94 : 31,009.43 = 7,525.42 : x
  2. Step 2: Convert to fraction form
    20,672.94/31,009.43 = 7,525.42/x
  3. Step 3: Cross multiply
    20,672.94x = 31,009.43 × 7,525.42
  4. Step 4: Simplify right side
    20,672.94x = 233,358,984.71
  5. Step 5: Solve for x
    x = 233,358,984.71/20,672.94
  6. Step 6: Final answer
    x = 11,288.14

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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.