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Finding the Fourth Proportional to 30,935.40, 42,692.92 and 17,507.22

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Solution

The fourth proportional to 30,935.40, 42,692.92 and 17,507.22 is: 24,161.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,935.40 : 42,692.92 = 17,507.22 : x
  2. Step 2: Convert to fraction form
    30,935.40/42,692.92 = 17,507.22/x
  3. Step 3: Cross multiply
    30,935.40x = 42,692.92 × 17,507.22
  4. Step 4: Simplify right side
    30,935.40x = 747,434,342.88
  5. Step 5: Solve for x
    x = 747,434,342.88/30,935.40
  6. Step 6: Final answer
    x = 24,161.13

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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.