Home / 22,771.45-31,424.53-12,699.90

Finding the Fourth Proportional to 22,771.45, 31,424.53 and 12,699.90

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Solution

The fourth proportional to 22,771.45, 31,424.53 and 12,699.90 is: 17,525.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,771.45 : 31,424.53 = 12,699.90 : x
  2. Step 2: Convert to fraction form
    22,771.45/31,424.53 = 12,699.90/x
  3. Step 3: Cross multiply
    22,771.45x = 31,424.53 × 12,699.90
  4. Step 4: Simplify right side
    22,771.45x = 399,088,388.55
  5. Step 5: Solve for x
    x = 399,088,388.55/22,771.45
  6. Step 6: Final answer
    x = 17,525.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.