Home / 22,702.40-31,329.21-12,631.81

Finding the Fourth Proportional to 22,702.40, 31,329.21 and 12,631.81

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Solution

The fourth proportional to 22,702.40, 31,329.21 and 12,631.81 is: 17,431.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,702.40 : 31,329.21 = 12,631.81 : x
  2. Step 2: Convert to fraction form
    22,702.40/31,329.21 = 12,631.81/x
  3. Step 3: Cross multiply
    22,702.40x = 31,329.21 × 12,631.81
  4. Step 4: Simplify right side
    22,702.40x = 395,744,628.17
  5. Step 5: Solve for x
    x = 395,744,628.17/22,702.40
  6. Step 6: Final answer
    x = 17,431.84

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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.