Home / 12,282.77-18,421.63-3,515.74

Finding the Fourth Proportional to 12,282.77, 18,421.63 and 3,515.74

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Solution

The fourth proportional to 12,282.77, 18,421.63 and 3,515.74 is: 5,272.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,282.77 : 18,421.63 = 3,515.74 : x
  2. Step 2: Convert to fraction form
    12,282.77/18,421.63 = 3,515.74/x
  3. Step 3: Cross multiply
    12,282.77x = 18,421.63 × 3,515.74
  4. Step 4: Simplify right side
    12,282.77x = 64,765,606.61
  5. Step 5: Solve for x
    x = 64,765,606.61/12,282.77
  6. Step 6: Final answer
    x = 5,272.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.