Home / 12,822.02-17,692.80-7,157.09

Finding the Fourth Proportional to 12,822.02, 17,692.80 and 7,157.09

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Solution

The fourth proportional to 12,822.02, 17,692.80 and 7,157.09 is: 9,875.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,822.02 : 17,692.80 = 7,157.09 : x
  2. Step 2: Convert to fraction form
    12,822.02/17,692.80 = 7,157.09/x
  3. Step 3: Cross multiply
    12,822.02x = 17,692.80 × 7,157.09
  4. Step 4: Simplify right side
    12,822.02x = 126,628,873.49
  5. Step 5: Solve for x
    x = 126,628,873.49/12,822.02
  6. Step 6: Final answer
    x = 9,875.89

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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.