Home / 30,515.60-42,110.28-17,086.64

Finding the Fourth Proportional to 30,515.60, 42,110.28 and 17,086.64

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Solution

The fourth proportional to 30,515.60, 42,110.28 and 17,086.64 is: 23,578.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,515.60 : 42,110.28 = 17,086.64 : x
  2. Step 2: Convert to fraction form
    30,515.60/42,110.28 = 17,086.64/x
  3. Step 3: Cross multiply
    30,515.60x = 42,110.28 × 17,086.64
  4. Step 4: Simplify right side
    30,515.60x = 719,523,194.66
  5. Step 5: Solve for x
    x = 719,523,194.66/30,515.60
  6. Step 6: Final answer
    x = 23,578.86

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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.