Home / 31,128.84-42,961.49-17,702.12

Finding the Fourth Proportional to 31,128.84, 42,961.49 and 17,702.12

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Solution

The fourth proportional to 31,128.84, 42,961.49 and 17,702.12 is: 24,431.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,128.84 : 42,961.49 = 17,702.12 : x
  2. Step 2: Convert to fraction form
    31,128.84/42,961.49 = 17,702.12/x
  3. Step 3: Cross multiply
    31,128.84x = 42,961.49 × 17,702.12
  4. Step 4: Simplify right side
    31,128.84x = 760,509,451.36
  5. Step 5: Solve for x
    x = 760,509,451.36/31,128.84
  6. Step 6: Final answer
    x = 24,431.02

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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.