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Finding the Fourth Proportional to 22,703.64, 31,328.21 and 12,631.37

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Solution

The fourth proportional to 22,703.64, 31,328.21 and 12,631.37 is: 17,429.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,703.64 : 31,328.21 = 12,631.37 : x
  2. Step 2: Convert to fraction form
    22,703.64/31,328.21 = 12,631.37/x
  3. Step 3: Cross multiply
    22,703.64x = 31,328.21 × 12,631.37
  4. Step 4: Simplify right side
    22,703.64x = 395,718,086.18
  5. Step 5: Solve for x
    x = 395,718,086.18/22,703.64
  6. Step 6: Final answer
    x = 17,429.72

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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.