Home / 30,702.81-42,370.28-17,272.82

Finding the Fourth Proportional to 30,702.81, 42,370.28 and 17,272.82

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Solution

The fourth proportional to 30,702.81, 42,370.28 and 17,272.82 is: 23,836.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,702.81 : 42,370.28 = 17,272.82 : x
  2. Step 2: Convert to fraction form
    30,702.81/42,370.28 = 17,272.82/x
  3. Step 3: Cross multiply
    30,702.81x = 42,370.28 × 17,272.82
  4. Step 4: Simplify right side
    30,702.81x = 731,853,921.57
  5. Step 5: Solve for x
    x = 731,853,921.57/30,702.81
  6. Step 6: Final answer
    x = 23,836.71

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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.