Home / 31,121.14-42,946.98-17,692.39

Finding the Fourth Proportional to 31,121.14, 42,946.98 and 17,692.39

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Solution

The fourth proportional to 31,121.14, 42,946.98 and 17,692.39 is: 24,415.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,121.14 : 42,946.98 = 17,692.39 : x
  2. Step 2: Convert to fraction form
    31,121.14/42,946.98 = 17,692.39/x
  3. Step 3: Cross multiply
    31,121.14x = 42,946.98 × 17,692.39
  4. Step 4: Simplify right side
    31,121.14x = 759,834,719.48
  5. Step 5: Solve for x
    x = 759,834,719.48/31,121.14
  6. Step 6: Final answer
    x = 24,415.39

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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.