Home / 12,459.77-18,608.90-11,287.43

Finding the Fourth Proportional to 12,459.77, 18,608.90 and 11,287.43

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Solution

The fourth proportional to 12,459.77, 18,608.90 and 11,287.43 is: 16,857.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,459.77 : 18,608.90 = 11,287.43 : x
  2. Step 2: Convert to fraction form
    12,459.77/18,608.90 = 11,287.43/x
  3. Step 3: Cross multiply
    12,459.77x = 18,608.90 × 11,287.43
  4. Step 4: Simplify right side
    12,459.77x = 210,046,656.13
  5. Step 5: Solve for x
    x = 210,046,656.13/12,459.77
  6. Step 6: Final answer
    x = 16,857.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.