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Finding the Fourth Proportional to 22,989.99, 31,710.78 and 13,913.13

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Solution

The fourth proportional to 22,989.99, 31,710.78 and 13,913.13 is: 19,190.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,989.99 : 31,710.78 = 13,913.13 : x
  2. Step 2: Convert to fraction form
    22,989.99/31,710.78 = 13,913.13/x
  3. Step 3: Cross multiply
    22,989.99x = 31,710.78 × 13,913.13
  4. Step 4: Simplify right side
    22,989.99x = 441,196,204.54
  5. Step 5: Solve for x
    x = 441,196,204.54/22,989.99
  6. Step 6: Final answer
    x = 19,190.80

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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.