Home / 20,666.82-31,008.51-7,520.10

Finding the Fourth Proportional to 20,666.82, 31,008.51 and 7,520.10

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Solution

The fourth proportional to 20,666.82, 31,008.51 and 7,520.10 is: 11,283.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,666.82 : 31,008.51 = 7,520.10 : x
  2. Step 2: Convert to fraction form
    20,666.82/31,008.51 = 7,520.10/x
  3. Step 3: Cross multiply
    20,666.82x = 31,008.51 × 7,520.10
  4. Step 4: Simplify right side
    20,666.82x = 233,187,096.05
  5. Step 5: Solve for x
    x = 233,187,096.05/20,666.82
  6. Step 6: Final answer
    x = 11,283.16

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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.