Home / 20,814.15-31,225.41-7,666.59

Finding the Fourth Proportional to 20,814.15, 31,225.41 and 7,666.59

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Solution

The fourth proportional to 20,814.15, 31,225.41 and 7,666.59 is: 11,501.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,814.15 : 31,225.41 = 7,666.59 : x
  2. Step 2: Convert to fraction form
    20,814.15/31,225.41 = 7,666.59/x
  3. Step 3: Cross multiply
    20,814.15x = 31,225.41 × 7,666.59
  4. Step 4: Simplify right side
    20,814.15x = 239,392,416.05
  5. Step 5: Solve for x
    x = 239,392,416.05/20,814.15
  6. Step 6: Final answer
    x = 11,501.43

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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.