Home / 12,406.60-17,122.59-7,103.12

Finding the Fourth Proportional to 12,406.60, 17,122.59 and 7,103.12

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Solution

The fourth proportional to 12,406.60, 17,122.59 and 7,103.12 is: 9,803.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,406.60 : 17,122.59 = 7,103.12 : x
  2. Step 2: Convert to fraction form
    12,406.60/17,122.59 = 7,103.12/x
  3. Step 3: Cross multiply
    12,406.60x = 17,122.59 × 7,103.12
  4. Step 4: Simplify right side
    12,406.60x = 121,623,811.48
  5. Step 5: Solve for x
    x = 121,623,811.48/12,406.60
  6. Step 6: Final answer
    x = 9,803.16

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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.