Home / 12,427.02-17,149.69-7,122.84

Finding the Fourth Proportional to 12,427.02, 17,149.69 and 7,122.84

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Solution

The fourth proportional to 12,427.02, 17,149.69 and 7,122.84 is: 9,829.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,427.02 : 17,149.69 = 7,122.84 : x
  2. Step 2: Convert to fraction form
    12,427.02/17,149.69 = 7,122.84/x
  3. Step 3: Cross multiply
    12,427.02x = 17,149.69 × 7,122.84
  4. Step 4: Simplify right side
    12,427.02x = 122,154,442.51
  5. Step 5: Solve for x
    x = 122,154,442.51/12,427.02
  6. Step 6: Final answer
    x = 9,829.75

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Double scale
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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.