Home / 31,120.84-42,945.69-17,692.66

Finding the Fourth Proportional to 31,120.84, 42,945.69 and 17,692.66

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Solution

The fourth proportional to 31,120.84, 42,945.69 and 17,692.66 is: 24,415.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,120.84 : 42,945.69 = 17,692.66 : x
  2. Step 2: Convert to fraction form
    31,120.84/42,945.69 = 17,692.66/x
  3. Step 3: Cross multiply
    31,120.84x = 42,945.69 × 17,692.66
  4. Step 4: Simplify right side
    31,120.84x = 759,823,491.64
  5. Step 5: Solve for x
    x = 759,823,491.64/31,120.84
  6. Step 6: Final answer
    x = 24,415.26

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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.