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Finding the Fourth Proportional to 22,692.84, 31,316.25 and 12,621.30

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Solution

The fourth proportional to 22,692.84, 31,316.25 and 12,621.30 is: 17,417.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,692.84 : 31,316.25 = 12,621.30 : x
  2. Step 2: Convert to fraction form
    22,692.84/31,316.25 = 12,621.30/x
  3. Step 3: Cross multiply
    22,692.84x = 31,316.25 × 12,621.30
  4. Step 4: Simplify right side
    22,692.84x = 395,251,786.13
  5. Step 5: Solve for x
    x = 395,251,786.13/22,692.84
  6. Step 6: Final answer
    x = 17,417.47

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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.