Home / 30,826.79-42,540.96-16,679.63

Finding the Fourth Proportional to 30,826.79, 42,540.96 and 16,679.63

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Solution

The fourth proportional to 30,826.79, 42,540.96 and 16,679.63 is: 23,017.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,826.79 : 42,540.96 = 16,679.63 : x
  2. Step 2: Convert to fraction form
    30,826.79/42,540.96 = 16,679.63/x
  3. Step 3: Cross multiply
    30,826.79x = 42,540.96 × 16,679.63
  4. Step 4: Simplify right side
    30,826.79x = 709,567,259.94
  5. Step 5: Solve for x
    x = 709,567,259.94/30,826.79
  6. Step 6: Final answer
    x = 23,017.88

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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.